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HTML

              
                
<div class="wrapper">
  <!-- btn-1 -->
  <div class="btn">
    <a class="custom-btn btn-1" >Read More1</a>
  </div>

  <!-- btn-2 -->
  <div class="btn">
    <a class="custom-btn btn-2">Read More2</a>
  </div>

  <!-- btn-3 -->
  <div class="btn">
    <a class="custom-btn btn-3"><span>Read More3</span></a>
  </div>

  <!-- btn-4 -->
  <div class="btn">
    <a class="custom-btn btn-4"><span>Read More4</span></a>
  </div>

  <!-- btn-5 -->
  <div class="btn">
    <a class="custom-btn btn-5"><span>Read More5</span></a>
  </div>

  <!-- btn-6 -->
  <div class="btn">
    <a class="custom-btn btn-6"><span>Read More6</span></a>
  </div>

  <!-- btn-7 -->
  <div class="btn">
    <a class="custom-btn btn-7"><span>Read More7</span></a>
  </div>

  <!-- btn-8 -->
  <div class="btn">
    <a class="custom-btn btn-8"><span>Read More8</span></a>
  </div>

  <!-- btn-9 -->
  <div class="btn">
    <a class="custom-btn btn-9">Read More9</a>
  </div>

  <!-- btn-10 -->
  <div class="btn">
    <a class="custom-btn btn-10">Read More10</a>
  </div>

  <!-- btn-11 -->
  <div class="btn">
    <a class="custom-btn btn-11"
     >Read More11
      <div class="dot"></div
    ></a>
  </div>

  <!-- btn-12 -->
  <div class="btn">
    <a class="custom-btn btn-12"><span>Click!12</span><span>Read More12</span></a>
  </div>

  <!-- btn-13 -->
  <div class="btn">
    <a class="custom-btn btn-13">Read More13</a>
  </div>

  <!-- btn-14 -->
  <div class="btn">
    <a class="custom-btn btn-14" >Read More14</a>
  </div>

  <!-- btn-15 -->
  <div class="btn">
    <a class="custom-btn btn-15">Read More15</a>
  </div>

  <!-- btn-16 -->
  <div class="btn">
    <a class="custom-btn btn-16">Read More16</a>
  </div>

  <!-- btn-17 -->
  <div class="btn">
    <a class="custom-btn btn-17" >Read More17</a>
  </div>

  <!-- btn-18 -->
  <div class="btn">
    <a class="custom-btn btn-18" ><span>Read More18</span></a>
  </div>

  <!-- btn-19 -->
  <div class="btn">
    <a class="custom-btn btn-19">Read More19</a>
  </div>

  <!-- btn-20 -->
  <div class="btn">
    <a class="custom-btn btn-20" > <span>Read More20</span><em></em></a>
  </div>

  <!-- btn-21 -->
  <div class="btn">
    <a class="custom-btn btn-21">Read More21</a>
  </div>

  <!-- btn-22 -->
  <div class="btn">
    <a class="custom-btn btn-22">Read More22</a>
  </div>

  <!-- btn-23 -->
  <div class="btn">
    <a class="custom-btn btn-23">Read More23</a>
  </div>

  <!-- btn-24 -->
  <div class="btn">
    <a class="custom-btn btn-24" >Read More24</a>
  </div>

  <!-- btn-25 -->
  <div class="btn">
    <a class="custom-btn btn-25" >Read More25</a>
  </div>

  <!--  btn-26  -->
  <div class="btn">
    <a class="custom-btn btn-26" >
      <svg>
        <rect x="2" y="2" rx="0" fill="none" width="205" height="34"></rect>
      </svg>
      <span
        >Read More26
        <i class="material-icons">arrow_right_alt</i>
      </span>
    </a>
  </div>

  <!--  btn-27  -->
  <div class="btn">
    <a class="custom-btn btn-27" >Read More27</a>
  </div>

  <!--  btn-28  -->
  <div class="btn">
    <a class="custom-btn btn-28" >Read More28</a>
  </div>

  <!-- btn-29 -->
  <div class="btn">
    <a class="custom-btn btn-29" >Read More29</a>
  </div>

  <!-- btn-30 -->
  <div class="btn">
    <a class="custom-btn btn-30 btn-arrow" >
      <span
        >More30<svg
          version="1.1"
          id="Layer_1"
          xmlns="http://www.w3.org/2000/svg"
          xmlns:xlink="http://www.w3.org/1999/xlink"
          x="0px"
          y="0px"
          viewBox="0 0 36.1 25.8"
          enable-background="new 0 0 36.1 25.8"
          xml:space="preserve"
        >
          <g>
            <line
              fill="none"
              stroke="#FFFFFF"
              stroke-width="3"
              stroke-miterlimit="10"
              x1="0"
              y1="12.9"
              x2="34"
              y2="12.9"
            ></line>
            <polyline
              fill="none"
              stroke="#FFFFFF"
              stroke-width="3"
              stroke-miterlimit="10"
              points="22.2,1.1 34,12.9 22.2,24.7   "
            ></polyline>
          </g></svg></span
    ></a>
  </div>

  <!--  btn-31  -->
  <div class="btn">
    <a class="custom-btn btn-31" >完</a>
  </div>
</div>

              
            
!

CSS

              
                body {
  background: #e0e5ec;
}

a{
 text-decoration:none;
}
.btn{
margin-bottom:20px;
}

.wrapper {
  width: 90%;
  margin: 40px auto;
  text-align: center;
  display: flex;
  flex-wrap: wrap;
  gap: 50px;
 -webkit-justify-content:space-around;
}

/* ボタン部分 ↓*/

.custom-btn{
 display:flex;
 align-items:center;
 justify-content:center;
 width: 130px;
 height: 40px;
 color: #fff;
 border-radius: 5px;
 font-family: 'Lato', sans-serif;
 font-weight: 500;
 background: transparent;
 cursor: pointer;
 transition: all 0.3s ease;
 position: relative;
 box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
   7px 7px 20px 0px rgba(0,0,0,.1),
   4px 4px 5px 0px rgba(0,0,0,.1);
  
}

/* 1 */
.btn-1 {
  background: rgb(6,14,131);
  background: linear-gradient(0deg, rgba(6,14,131,1) 0%, rgba(12,25,180,1) 100%);
  border: none;
}
.btn-1:hover {
   background: rgb(0,3,255);
   background: linear-gradient(0deg, rgba(0,3,255,1) 0%, rgba(2,126,251,1) 100%);
}

/* 2 */
.btn-2 {
  background: rgb(96,9,240);
  background: linear-gradient(0deg, rgba(96,9,240,1) 0%, rgba(129,5,240,1) 100%);
  border: none;
  
}
.btn-2:before {
  height: 0%;
  width: 2px;
}
.btn-2:hover {
  box-shadow:  4px 4px 6px 0 rgba(255,255,255,.5),
              -4px -4px 6px 0 rgba(116, 125, 136, .5), 
    inset -4px -4px 6px 0 rgba(255,255,255,.2),
    inset 4px 4px 6px 0 rgba(0, 0, 0, .4);
}

/* 3 */
.btn-3 {
 background: rgb(0,172,238);
 background: linear-gradient(0deg, rgba(0,172,238,1) 0%, rgba(2,126,251,1) 100%);
 line-height: 42px;
 border: none;
}
.btn-3 span {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
}
.btn-3:before,
.btn-3:after {
  position: absolute;
  content: "";
  right: 0;
  top: 0;
  background: rgba(2,126,251,1);
  transition: all 0.3s ease;
}
.btn-3:before {
  height: 0%;
  width: 2px;
}
.btn-3:after {
  width: 0%;
  height: 2px;
}
.btn-3:hover{
   background: transparent;
  box-shadow: none;
}
.btn-3:hover:before {
  height: 100%;
}
.btn-3:hover:after {
  width: 100%;
}
.btn-3 span:hover{
   color: rgba(2,126,251,1);
}
.btn-3 span:before,
.btn-3 span:after {
  position: absolute;
  content: "";
  left: 0;
  bottom: 0;
  background: rgba(2,126,251,1);
  transition: all 0.3s ease;
}
.btn-3 span:before {
  width: 2px;
  height: 0%;
}
.btn-3 span:after {
  width: 0%;
  height: 2px;
}
.btn-3 span:hover:before {
  height: 100%;
}
.btn-3 span:hover:after {
  width: 100%;
}

/* 4 */
.btn-4 {
  background-color: #4dccc6;
background-image: linear-gradient(315deg, #4dccc6 0%, #96e4df 74%);
  line-height: 42px;
  padding: 0;
  border: none;
}
.btn-4:hover{
  background-color: #89d8d3;
background-image: linear-gradient(315deg, #89d8d3 0%, #03c8a8 74%);
}
.btn-4 span {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
}
.btn-4:before,
.btn-4:after {
  position: absolute;
  content: "";
  right: 0;
  top: 0;
   box-shadow:  4px 4px 6px 0 rgba(255,255,255,.9),
              -4px -4px 6px 0 rgba(116, 125, 136, .2), 
    inset -4px -4px 6px 0 rgba(255,255,255,.9),
    inset 4px 4px 6px 0 rgba(116, 125, 136, .3);
  transition: all 0.3s ease;
}
.btn-4:before {
  height: 0%;
  width: .1px;
}
.btn-4:after {
  width: 0%;
  height: .1px;
}
.btn-4:hover:before {
  height: 100%;
}
.btn-4:hover:after {
  width: 100%;
}
.btn-4 span:before,
.btn-4 span:after {
  position: absolute;
  content: "";
  left: 0;
  bottom: 0;
  box-shadow:  4px 4px 6px 0 rgba(255,255,255,.9),
              -4px -4px 6px 0 rgba(116, 125, 136, .2), 
    inset -4px -4px 6px 0 rgba(255,255,255,.9),
    inset 4px 4px 6px 0 rgba(116, 125, 136, .3);
  transition: all 0.3s ease;
}
.btn-4 span:before {
  width: .1px;
  height: 0%;
}
.btn-4 span:after {
  width: 0%;
  height: .1px;
}
.btn-4 span:hover:before {
  height: 100%;
}
.btn-4 span:hover:after {
  width: 100%;
}

/* 5 */
.btn-5 {
  width: 130px;
  height: 40px;
  line-height: 42px;
  padding: 0;
  border: none;
  background: rgb(255,27,0);
background: linear-gradient(0deg, rgba(255,27,0,1) 0%, rgba(251,75,2,1) 100%);
}
.btn-5:hover {
  color: #f0094a;
  background: transparent;
  box-shadow:none;
}
.btn-5:before,
.btn-5:after{
  content:'';
  position:absolute;
  top:0;
  right:0;
  height:2px;
  width:0;
  background: #f0094a;
  box-shadow:
   -1px -1px 5px 0px #fff,
   7px 7px 20px 0px #0003,
   4px 4px 5px 0px #0002;
  transition:400ms ease all;
}
.btn-5:after{
  right:inherit;
  top:inherit;
  left:0;
  bottom:0;
}
.btn-5:hover:before,
.btn-5:hover:after{
  width:100%;
  transition:800ms ease all;
}


/* 6 */
.btn-6 {
background: rgb(247,150,192);
background: radial-gradient(circle, rgba(247,150,192,1) 0%, rgba(118,174,241,1) 100%);
  line-height: 42px;
  padding: 0;
  border: none;
}
.btn-6 span {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
}
.btn-6:before,
.btn-6:after {
  position: absolute;
  content: "";
  height: 0%;
  width: 1px;
 box-shadow:
   -1px -1px 20px 0px rgba(255,255,255,1),
   -4px -4px 5px 0px rgba(255,255,255,1),
   7px 7px 20px 0px rgba(0,0,0,.4),
   4px 4px 5px 0px rgba(0,0,0,.3);
}
.btn-6:before {
  right: 0;
  top: 0;
  transition: all 500ms ease;
}
.btn-6:after {
  left: 0;
  bottom: 0;
  transition: all 500ms ease;
}
.btn-6:hover{
  background: transparent;
  color: #76aef1;
  box-shadow: none;
}
.btn-6:hover:before {
  transition: all 500ms ease;
  height: 100%;
}
.btn-6:hover:after {
  transition: all 500ms ease;
  height: 100%;
}
.btn-6 span:before,
.btn-6 span:after {
  position: absolute;
  content: "";
  box-shadow:
   -1px -1px 20px 0px rgba(255,255,255,1),
   -4px -4px 5px 0px rgba(255,255,255,1),
   7px 7px 20px 0px rgba(0,0,0,.4),
   4px 4px 5px 0px rgba(0,0,0,.3);
}
.btn-6 span:before {
  left: 0;
  top: 0;
  width: 0%;
  height: .5px;
  transition: all 500ms ease;
}
.btn-6 span:after {
  right: 0;
  bottom: 0;
  width: 0%;
  height: .5px;
  transition: all 500ms ease;
}
.btn-6 span:hover:before {
  width: 100%;
}
.btn-6 span:hover:after {
  width: 100%;
}

/* 7 */
.btn-7 {
background: linear-gradient(0deg, rgba(255,151,0,1) 0%, rgba(251,75,2,1) 100%);
  line-height: 42px;
  padding: 0;
  border: none;
}
.btn-7 span {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
}
.btn-7:before,
.btn-7:after {
  position: absolute;
  content: "";
  right: 0;
  bottom: 0;
  background: rgba(251,75,2,1);
  box-shadow:
   -7px -7px 20px 0px rgba(255,255,255,.9),
   -4px -4px 5px 0px rgba(255,255,255,.9),
   7px 7px 20px 0px rgba(0,0,0,.2),
   4px 4px 5px 0px rgba(0,0,0,.3);
  transition: all 0.3s ease;
}
.btn-7:before{
   height: 0%;
   width: 2px;
}
.btn-7:after {
  width: 0%;
  height: 2px;
}
.btn-7:hover{
  color: rgba(251,75,2,1);
  background: transparent;
}
.btn-7:hover:before {
  height: 100%;
}
.btn-7:hover:after {
  width: 100%;
}
.btn-7 span:before,
.btn-7 span:after {
  position: absolute;
  content: "";
  left: 0;
  top: 0;
  background: rgba(251,75,2,1);
  box-shadow:
   -7px -7px 20px 0px rgba(255,255,255,.9),
   -4px -4px 5px 0px rgba(255,255,255,.9),
   7px 7px 20px 0px rgba(0,0,0,.2),
   4px 4px 5px 0px rgba(0,0,0,.3);
  transition: all 0.3s ease;
}
.btn-7 span:before {
  width: 2px;
  height: 0%;
}
.btn-7 span:after {
  height: 2px;
  width: 0%;
}
.btn-7 span:hover:before {
  height: 100%;
}
.btn-7 span:hover:after {
  width: 100%;
}

/* 8 */
.btn-8 {
  background-color: #f0ecfc;
background-image: linear-gradient(315deg, #f0ecfc 0%, #c797eb 74%);
  line-height: 42px;
  padding: 0;
  border: none;
}
.btn-8 span {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
}
.btn-8:before,
.btn-8:after {
  position: absolute;
  content: "";
  right: 0;
  bottom: 0;
  background: #c797eb;
  box-shadow:  4px 4px 6px 0 rgba(255,255,255,.5),
              -4px -4px 6px 0 rgba(116, 125, 136, .2), 
    inset -4px -4px 6px 0 rgba(255,255,255,.5),
    inset 4px 4px 6px 0 rgba(116, 125, 136, .3);
  transition: all 0.3s ease;
}
.btn-8:before{
   height: 0%;
   width: 2px;
}
.btn-8:after {
  width: 0%;
  height: 2px;
}
.btn-8:hover:before {
  height: 100%;
}
.btn-8:hover:after {
  width: 100%;
}
.btn-8:hover{
  background: transparent;
}
.btn-8 span:hover{
  color: #c797eb;
}
.btn-8 span:before,
.btn-8 span:after {
  position: absolute;
  content: "";
  left: 0;
  top: 0;
  background: #c797eb;
  box-shadow:  4px 4px 6px 0 rgba(255,255,255,.5),
              -4px -4px 6px 0 rgba(116, 125, 136, .2), 
    inset -4px -4px 6px 0 rgba(255,255,255,.5),
    inset 4px 4px 6px 0 rgba(116, 125, 136, .3);
  transition: all 0.3s ease;
}
.btn-8 span:before {
  width: 2px;
  height: 0%;
}
.btn-8 span:after {
  height: 2px;
  width: 0%;
}
.btn-8 span:hover:before {
  height: 100%;
}
.btn-8 span:hover:after {
  width: 100%;
}
  

/* 9 */
.btn-9 {
  border: none;
  transition: all 0.3s ease;
  overflow: hidden;
}
.btn-9:after {
  position: absolute;
  content: " ";
  z-index: -1;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #1fd1f9;
  background-image: linear-gradient(315deg, #1fd1f9 0%, #b621fe 74%);
  transition: all 0.3s ease;
}
.btn-9:hover {
  background: transparent;
  box-shadow:  4px 4px 6px 0 rgba(255,255,255,.5),
              -4px -4px 6px 0 rgba(116, 125, 136, .2), 
    inset -4px -4px 6px 0 rgba(255,255,255,.5),
    inset 4px 4px 6px 0 rgba(116, 125, 136, .3);
  color: #fff;
}
.btn-9:hover:after {
  -webkit-transform: scale(2) rotate(180deg);
  transform: scale(2) rotate(180deg);
  box-shadow:  4px 4px 6px 0 rgba(255,255,255,.5),
              -4px -4px 6px 0 rgba(116, 125, 136, .2), 
    inset -4px -4px 6px 0 rgba(255,255,255,.5),
    inset 4px 4px 6px 0 rgba(116, 125, 136, .3);
}

/* 10 */
.btn-10 {
  background: rgb(22,9,240);
  background: linear-gradient(0deg, rgba(22,9,240,1) 0%, rgba(49,110,244,1) 100%);
  color: #fff;
  border: none;
  transition: all 0.3s ease;
  overflow: hidden;
}
.btn-10:after {
  position: absolute;
  content: " ";
  top: 0;
  left: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  transition: all 0.3s ease;
  -webkit-transform: scale(.1);
  transform: scale(.1);
}
.btn-10:hover {
  color: #fff;
  border: none;
  background: transparent;
}
.btn-10:hover:after {
  background: rgb(0,3,255);
  background: linear-gradient(0deg, rgba(2,126,251,1) 0%,  rgba(0,3,255,1)100%);
  -webkit-transform: scale(1);
  transform: scale(1);
}

/* 11 */
.btn-11 {
  border: none;
  background: rgb(251,33,117);
  background: linear-gradient(0deg, rgba(251,33,117,1) 0%, rgba(234,76,137,1) 100%);
  color: #fff;
  overflow: hidden;
}
.btn-11:hover {
    text-decoration: none;
    color: #fff;
}
.btn-11:before {
    position: absolute;
    content: '';
    display: inline-block;
    top: -180px;
    left: 0;
    width: 30px;
    height: 100%;
    background-color: #fff;
    animation: shiny-btn1 3s ease-in-out infinite;
}
.btn-11:hover{
  opacity: .7;
}
.btn-11:active{
  box-shadow:  4px 4px 6px 0 rgba(255,255,255,.3),
              -4px -4px 6px 0 rgba(116, 125, 136, .2), 
    inset -4px -4px 6px 0 rgba(255,255,255,.2),
    inset 4px 4px 6px 0 rgba(0, 0, 0, .2);
}


@-webkit-keyframes shiny-btn1 {
    0% { -webkit-transform: scale(0) rotate(45deg); opacity: 0; }
    80% { -webkit-transform: scale(0) rotate(45deg); opacity: 0.5; }
    81% { -webkit-transform: scale(4) rotate(45deg); opacity: 1; }
    100% { -webkit-transform: scale(50) rotate(45deg); opacity: 0; }
}


/* 12 */
.btn-12{
  border:none;
  box-shadow: none;
  width: 130px;
  height: 40px;
  line-height: 42px;
  -webkit-perspective: 230px;
  perspective: 230px;
}
.btn-12 span {
  background: rgb(0,172,238);
  background: linear-gradient(0deg, rgba(0,172,238,1) 0%, rgba(2,126,251,1) 100%);
  display: block;
  position: absolute;
  width: 130px;
  height: 40px;
  box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
   7px 7px 20px 0px rgba(0,0,0,.1),
   4px 4px 5px 0px rgba(0,0,0,.1);
  border-radius: 5px;
  margin:0;
  text-align: center;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  -webkit-transition: all .3s;
  transition: all .3s;
}
.btn-12 span:nth-child(1) {
  box-shadow:
   -7px -7px 20px 0px #fff9,
   -4px -4px 5px 0px #fff9,
   7px 7px 20px 0px #0002,
   4px 4px 5px 0px #0001;
  -webkit-transform: rotateX(90deg);
  -moz-transform: rotateX(90deg);
  transform: rotateX(90deg);
  -webkit-transform-origin: 50% 50% -20px;
  -moz-transform-origin: 50% 50% -20px;
  transform-origin: 50% 50% -20px;
}
.btn-12 span:nth-child(2) {
  -webkit-transform: rotateX(0deg);
  -moz-transform: rotateX(0deg);
  transform: rotateX(0deg);
  -webkit-transform-origin: 50% 50% -20px;
  -moz-transform-origin: 50% 50% -20px;
  transform-origin: 50% 50% -20px;
}
.btn-12:hover span:nth-child(1) {
  box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
   7px 7px 20px 0px rgba(0,0,0,.1),
   4px 4px 5px 0px rgba(0,0,0,.1);
  -webkit-transform: rotateX(0deg);
  -moz-transform: rotateX(0deg);
  transform: rotateX(0deg);
}
.btn-12:hover span:nth-child(2) {
  box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
   7px 7px 20px 0px rgba(0,0,0,.1),
   4px 4px 5px 0px rgba(0,0,0,.1);
 color: transparent;
  -webkit-transform: rotateX(-90deg);
  -moz-transform: rotateX(-90deg);
  transform: rotateX(-90deg);
}

/* 13 */
.btn-13 {
  background-color: #89d8d3;
background-image: linear-gradient(315deg, #89d8d3 0%, #03c8a8 74%);
  border: none;
  z-index: 1;
}
.btn-13:after {
  position: absolute;
  content: "";
  width: 100%;
  height: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
  border-radius: 5px;
   background-color: #4dccc6;
background-image: linear-gradient(315deg, #4dccc6 0%, #96e4df 74%);
  box-shadow:
   -7px -7px 20px 0px #fff9,
   -4px -4px 5px 0px #fff9,
   7px 7px 20px 0px #0002,
   4px 4px 5px 0px #0001;
  transition: all 0.3s ease;
}
.btn-13:hover {
  color: #fff;
}
.btn-13:hover:after {
  top: 0;
  height: 100%;
}
.btn-13:active {
  top: 2px;
}


/* 14 */
.btn-14 {
  background: rgb(255,151,0);
  border: none;
  z-index: 1;
}
.btn-14:after {
  position: absolute;
  content: "";
  width: 100%;
  height: 0;
  top: 0;
  left: 0;
  z-index: -1;
  border-radius: 5px;
  background-color: #eaf818;
  background-image: linear-gradient(315deg, #eaf818 0%, #f6fc9c 74%);
   box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5);
   7px 7px 20px 0px rgba(0,0,0,.1),
   4px 4px 5px 0px rgba(0,0,0,.1);
  transition: all 0.3s ease;
}
.btn-14:hover {
  color: #000;
}
.btn-14:hover:after {
  top: auto;
  bottom: 0;
  height: 100%;
}
.btn-14:active {
  top: 2px;
}

/* 15 */
.btn-15 {
  background: #b621fe;
  border: none;
  z-index: 1;
}
.btn-15:after {
  position: absolute;
  content: "";
  width: 0;
  height: 100%;
  top: 0;
  right: 0;
  z-index: -1;
  background-color: #663dff;
  border-radius: 5px;
   box-shadow:inset 2px 2px 2px 0px rgba(255,255,255,.5),
   7px 7px 20px 0px rgba(0,0,0,.1),
   4px 4px 5px 0px rgba(0,0,0,.1);
  transition: all 0.3s ease;
}
.btn-15:hover {
  color: #fff;
}
.btn-15:hover:after {
  left: 0;
  width: 100%;
}
.btn-15:active {
  top: 2px;
}


/* 16 */
.btn-16 {
  border: none;
  color: #000;
}
.btn-16:after {
  position: absolute;
  content: "";
  width: 0;
  height: 100%;
  top: 0;
  left: 0;
  direction: rtl;
  z-index: -1;
  box-shadow:
   -7px -7px 20px 0px #fff9,
   -4px -4px 5px 0px #fff9,
   7px 7px 20px 0px #0002,
   4px 4px 5px 0px #0001;
  transition: all 0.3s ease;
}
.btn-16:hover {
  color: #000;
}
.btn-16:hover:after {
  left: auto;
  right: 0;
  width: 100%;
}
.btn-16:active {
  top: 2px;
}

/* 17 */
.color-bg-start {
  background-color: salmon;
}
.bg-animate-color {
  animation: random-bg .5s linear infinite;
}
@keyframes random-bg {
  from {
    filter: hue-rotate(0);
  }
  to {
    filter: hue-rotate(360deg);
  }
}

.btn-17 {
  background-color: salmon;
  color: white;
  border: none;
  transition: all .3s ease;
  border-radius: 5px;
  letter-spacing: 2px;
  text-transform: uppercase;
  outline: none;
  align-self: center;
  cursor: pointer;
  font-weight: bold;
  width: 210px;
}

.btn-17:hover {
  animation: random-bg .5s linear infinite, grow 1300ms ease infinite;
}

.start-fun {
  background-color: #fff !important;
  /* change color of button text when fun is started   */
  color: salmon !important;
}

/* pulsating effect on button */
@keyframes grow {
  0% {
    transform: scale(1);
  }
  14% {
    transform: scale(1.3);
  }
  28% {
    transform: scale(1);
  }
  42% {
    transform: scale(1.3);
  }
  70% {
    transform: scale(1);
  }
}

/* 18 */

.btn-18 {
  width: 130px;
  height: 40px;
  line-height: 42px;
  padding: 0;
  border: none;
  color:rgba(251,75,2,1);
}
.btn-18 span {
  position: relative;
  display: block;
  width: 100%;
  height: 100%;
}
.btn-18:before,
.btn-18:after {
  position: absolute;
  content: "";
  right: 0;
  top: 0;
  background: rgba(251,75,2,1);
  transition: all 0.3s ease;
}
.btn-18:before {
  height: 50%;
  width: 2px;
}
.btn-18:after {
  width: 20%;
  height: 2px;
}
.btn-18:hover:before {
  height: 100%;
}
.btn-18:hover:after {
  width: 100%;
}
.btn-18 span:before,
.btn-18 span:after {
  position: absolute;
  content: "";
  left: 0;
  bottom: 0;
  background:rgba(251,75,2,1);
  transition: all 0.3s ease;
}
.btn-18 span:before {
  width: 2px;
  height: 50%;
}
.btn-18 span:after {
  width: 20%;
  height: 2px;
}
.btn-18 span:hover:before {
  height: 100%;
}
.btn-18 span:hover:after {
  width: 100%;
}

/* 19 */

.btn-19 {
  background: #f2f2f2;
  border: 2px solid #000;
  transition: all 0.3s ease;
  color:black;
}
.btn-19:before,
.btn-19:after {
  position: absolute;
  content: " ";
  z-index: -1;
  width: 25%;
  top: 50%;
  height: 2px;
  background: #000;
  transition: all 0.3s ease;
}
.btn-19:before {
  left: -10%;
}
.btn-19:after {
  right: -10%;
}
.btn-19:hover {
  background: #000;
  color: #fff;
}
.btn-19:hover:before {
  left: 0%;
}
.btn-19:hover:after {
  right: 0%;
}

/* 20 */

.btn-20 {
  cursor: pointer;
  background-color: #000;
 width: 230px;
  height: 44px;
  line-height: 44px; 
  box-shadow: 0px 0px 17px 1px rgba(0, 0, 0, 0.34);
}

.btn-20 span {
    color: #fff;
    display: block;
    padding-left: 35px;
    text-transform: uppercase;
    transform: scaleX(0.6);
    letter-spacing: 3px;
    transform-origin: center left;
    transition: color 0.3s ease;
    position: relative;
    z-index: 1;
  }
 .btn-20 em {
    position: absolute;
    height: 1px;
    background: #fff;
    width: 47%;
    right: 23px;
    top: 50%;
    transform: scaleX(0.25);
    transform-origin: center right;
    transition: all 0.3s ease;
    z-index: 1;
  }


.btn-20:before, 
.btn-20:after {
   content: '';
   background: #fff;
   height: 50%;
   width: 0;
   position: absolute;
   transition: .3s cubic-bezier(.785,.135,.15,.86);
  }


 .btn-20:before {
    top: 0;
    left: 0;
    right: auto;
  }
  .btn-20:after {
    bottom: 0;
    right: 0;
    left: auto;
  }


    .btn-20:hover:before {
      width: 100%;
      right: 0;
      left: auto;
    }
    .btn-20:hover:after {
      width: 100%;
      left: 0;
      right: auto;
    }
    .btn-20:hover span {
      color: #000;
    }
    .btn-20:hover em {
      background: #000;
      transform: scaleX(1);
    }
  

/* 21 js使用*/

.btn-21{
  outline:none;
  height: 40px;
  text-align: center;
  width: 130px;
  border-radius:40px;
  background: #fff;
  border: 2px solid green;
  color:green;
  letter-spacing:1px;
  text-shadow:0;
  cursor: pointer;
  transition: all 0.25s ease;
}
.btn-21:hover{
   color:white;
   background: green;
}

.btn-21:active{
  letter-spacing: 2px ;
}

/* 22 */

.btn-22{
  -webkit-transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  -moz-transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  -ms-transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  -o-transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  text-decoration: none;
  border-radius: 4px;
    color: rgba(30, 22, 54, 0.6);
  box-shadow: rgba(30, 22, 54, 0.4) 0 0px 0px 2px inset;
}
.btn-22:hover{
  color: rgba(255, 255, 255, 0.85);
  box-shadow: rgba(30, 22, 54, 0.7) 0 80px 0px 2px inset;
}

/* 23 */

.btn-23{
  -webkit-transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  -moz-transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  -ms-transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  -o-transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  transition: all 200ms cubic-bezier(0.390, 0.500, 0.150, 1.360);
  text-decoration: none;
  border-radius: 4px;
  color: rgba(30, 22, 54, 0.6);
  box-shadow: rgba(30, 22, 54, 0.4) 0 0px 0px 2px inset;
}

.btn-23:hover{
  color: rgba(255, 255, 255, 0.85);
  box-shadow: rgba(30, 22, 54, 0.7) 0 0px 0px 40px inset;
}

/* 24 */

.btn-24{
  position:relative;
  z-index:2;
  overflow:hidden;
  background: linear-gradient(0deg, rgba(255,151,0,1) 0%, rgba(251,75,2,1) 100%);
}
.btn-24:after{
  display:block;
  content:"";
  position:absolute;
  z-index:-1;
  top:50%;
  left:50%;
  width:130px;
  height:130px;
  margin:-30px 0 0 -30px;
  border:65px double rgba(255,255,255,0);
  border-radius:50%;
	transition:.5s;
}
.btn-24:hover:after{
  border-width:0;
  border-color:rgba(255,255,255,1);
}


/* 25 */

.btn-25{
  position:relative;
  z-index:2;
  overflow:hidden;
  background: rgb(0,172,238);
  background: linear-gradient(0deg, rgba(0,172,238,1) 0%, rgba(2,126,251,1) 100%);
}
.btn-25:after{
  display:block;
  content:"";
  position:absolute;
  z-index:-1;
  top:50%;
  left:50%;
  width:130px;
  height:130px;
  margin:-65px 0 0 -65px;
  border:65px dotted rgba(255,255,255,0);
  border-radius:50%;
  transition:.5s;
}
.btn-25:hover:after{
  border-width:0;
  border-color: rgba(255,255,255,1);
}

/* 26 */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP&display=swap');
.btn-26 {
  position: relative;
  display: inline-block;
  cursor: pointer;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
  text-align: left;
  vertical-align: middle;
  text-decoration: none;
  letter-spacing: 0.1em;
  color: #212529;
  border-radius: 0.5rem;
  padding-left:10px;
}

.btn-26 {
  line-height: 40px;
  width: 200px;
  height: 40px;
  cursor: pointer;
  text-decoration: none;
  background-color: transparent;
  padding:0 0 0 10px;
}

.btn-26 svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.btn-26 svg rect {
  -webkit-transition: all 400ms ease;
  transition: all 400ms ease;
  stroke: #000;
  stroke-width: 2;
  stroke-dasharray: 320px, 16px;
  stroke-dashoffset: 70px;
}

.btn-26:hover svg rect {
  stroke-dashoffset: 384px;
}

.btn-26 span {
  color: #000;
}

svg{
  position: relative;
}

span i{
  position:absolute;
  top: 50%;
    right: 15px;
    transform: translateY(-50%);
    -webkit-transform: translateY(-50%);
    -ms-transform: translateY(-50%);
}


/* 27 */

@keyframes hover {
  50% {
    transform: translateY(-3px);
  }

  100% {
    transform: translateY(-6px);
  }
}

@keyframes hover-shadow {
  0% {
    transform: translateY(6px);
    opacity: .4;
  }

  50% {
    transform: translateY(3px);
    opacity: 1;
  }


  100% {
    transform: translateY(6px);
    opacity: .4;
  }
}
.btn-27{
  position: relative;
  transition-duration: .3s;
  transition-property: transform;
  background: rgb(247,150,192);
background: radial-gradient(circle, rgba(247,150,192,1) 0%, rgba(118,174,241,1) 100%);
}
.btn-27:before{
  pointer-events: none;
  position: absolute;
  z-index: -1;
  content: '';
  top: 100%;
  left: 5%;
  height: 10px;
  width: 90%;
  opacity: 0;
  background: radial-gradient(ellipse at center, rgba(0,0,0,.35) 0%,rgba(0,0,0,0) 80%); 
  transition-duration: defaultDuration;
  transition-property: transform opacity;
}
.btn-27:hover{
transform: translateY(-6px);
animation-name: hover;
animation-duration: 1.5s;
animation-delay: .3s;
animation-timing-function: linear;
animation-iteration-count: infinite;
animation-direction: alternate;
}
.btn-27:before{
 opacity: .4;
 transform: translateY(6px);
 animation-name: hover-shadow;
 animation-duration: 1.5s;
 animation-delay: .3s;
 animation-timing-function: linear;
 animation-iteration-count: infinite;
 animation-direction: alternate;
}

/* 28 */

.btn-28{
color:#eb1777;
background:transparent;
border-width:2px;
border-style: solid;     
bordercolor:#eb1777;
position:relative;
transition:all 0.3s ease-in-out;
text-align:center;
}

.btn-28:before, 
.btn-28:after{ 
  content:'';
  display:block;
  position:absolute;
  border-color:#eb1777;
  box-sizing:border-box;
  border-style:solid;
  width:1em;
  height:1em;
  transition:all 0.3s ease-in-out;
}

.btn-28:before {
  top:-6px;
  left:-6px;
  border-width:2px 0 0 2px;
  z-index:5;
}
.btn-28:after {
  bottom:-6px;
  right:-6px;
  border-width:0 2px 2px 0;
}
.btn-28:hover:before, .btn-28:hover:after {
  width:calc(100% + 12px);
  height:calc(100% + 12px);
  border-color:#fff;
}
.btn-28:hover {
  color:#eb1777;
  background-color:#fff;
  border-color:#fff;
}

/* 29 */

.btn-29{
  position: relative;
  border: none;
  background-color: transparent;
  cursor: pointer;
  outline: none;
  font-size: 18px;
  background:transparent;
  box-shadow:none;
  color:gray;
}
.btn-29:hover{
  background: transparent;
  color:#f0094a;
}

.btn-29:after,
.btn-29:before{
   content: '';
   display: block;
   position: absolute;
   width: 20%;
   height: 20%;
   border: 2px solid;
   transition: all 0.6s ease;
   border-radius: 2px;
}
.btn-29:after{
   bottom: 0;
   right: 0;
   border-top-color: transparent;
   border-left-color: transparent;
   border-bottom-color: #f0094a;;
   border-right-color: #f0094a;;
}
.btn-29:before{
   top: 0;
   left: 0;
   border-bottom-color: transparent;
   border-right-color: transparent;
   border-top-color: #f0094a;;
   border-left-color:#f0094a;;
}
.btn-29:hover:after,
.btn-29:hover:before{
   border-bottom-color: #f0094a;;
   border-right-color:#f0094a;;
   border-top-color: #f0094a;;
   border-left-color: #f0094a;;
   width: 100%;
   height: 100%;
}

/* 30 */

.btn-30{
  background: black;
  color: white;
  border: none;
  font-size: 10px;
  font-size: 1rem;
  background-color: black;
  color: white;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: 2px solid black;
  transition: color 0.1s cubic-bezier(0.16, 0.08, 0.355, 1), background 0.1s cubic-bezier(0.16, 0.08, 0.355, 1);
  cursor: pointer;
  width: 150px;
  outline: none;
  vertical-align: middle;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.btn-border {
  background-color: transparent;
  color: black;
}

.btn-arrow {
  position: relative;
    transition: background-color 300ms ease-out;
}
  .btn-arrow span {
    display: inline-block;
    position: relative;
    transition: all 300ms ease-out;
    will-change: transform;
  }
  .btn-arrow:hover span {
    transform: translate3d(-1rem, 0, 0);
  }
.btn-arrow svg {
    position: absolute;
    width: 1.1em;
    right: 0px;
    right: 0rem;
    opacity: 0;
    top: 50%;
    transform: translateY(-50%);
    transition: all 300ms ease-out;
    will-change: right, opacity;
  }
  .btn-arrow:hover svg {
    opacity: 1;
    right: -2rem;
  }

/* 31 */

.btn-31{
  width:50px;
  background: #fff;
  border: 5px solid #4ac0ee;
  color: #4ac0ee;
  font-weight: bold;
  text-transform: uppercase;
  text-align:center;
  z-index: 2;
  transition:all 1s linear 0s;
}
.btn-31:hover{
  transform: rotateZ(360deg);
}


              
            
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