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HTML 

              
                <div class="container">
  <h1>CSS3 Buttons <span>Hover</span> Effects</h1>
  <div class="subheader">(hover to check effect)</div>
  
  <div class="link">
    <a href="https://github.com/eisenfox/css3-btns-hover" title="Check on GitHub" target="_blanc"><i class="far fa-star"></i>Check on GitHub</a>
    <a href="http://100dayscode.co.uk/" title="Check Codepen Challenge" target="_blanc"><i class="far fa-star"></i>Check Codepen Challenge</a>
  </div>
   
   <div class="content-block">
    
    <!-- effect #1-->
    <div class="content-block__effect">
      <h2>Effect #1</h2>
      
      <div class="btn-block">
        
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-1" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-1" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-1" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-1" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-1" title="View More">View More</a>
        
      </div>
    </div>
    
     <!-- effect #2-->
    <div class="content-block__effect">
      <h2>Effect #2</h2>
      
      <div class="btn-block">
        
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-2" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-2" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-2" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-2" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-2" title="View More">View More</a>
        
      </div>
    </div>
    
    <!-- effect #3-->
    <div class="content-block__effect">
      <h2>Effect #3</h2>
      
      <div class="btn-block">
        
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-3" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-3" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-3" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-3" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-3" title="View More">View More</a>
        
      </div>
    </div>
    
    <!-- effect #4-->
    <div class="content-block__effect">
      <h2>Effect #4</h2>
      
      <div class="btn-block">
        
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-4" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-4" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-4" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-4" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-4" title="View More">View More</a>
        
      </div>
    </div>
    
    <!-- effect #5-->
    <div class="content-block__effect">
      <h2>Effect #5</h2>
      
      <div class="btn-block">
        
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-5" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-5" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-5" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-5" title="View More">View More</a>
        <a href="#" class="btn-hover-effect btn-hover-effect--effect-5" title="View More">View More</a>
        
      </div>
    </div>
    
  </div>
</div>
!

CSS 

              
                //VARIABLES
$accent-theme-color: #119DA4;

$btn-bg-1: #880044;
$btn-bg-2: #28AFB0;
$btn-bg-3: #D78521;
$btn-bg-4: #745296;
$btn-bg-5: #3E8914;

$btn-hover-effect-padding-vert: 22px;
$btn-hover-effect-padding-horz: 36px;
$icon-block-width: 40px;

//MIXINS

//transitions mixin
@mixin transition-mix($property: all, $duration: 0.2s, $timing: linear, $delay: 0s) {
  transition-property: $property;
  transition-duration: $duration;
  transition-timing-function: $timing;
  transition-delay: $delay;
}

//position absolute mixin
@mixin position-absolute ($top: null, $left: null, $right: null, $bottom: null) {
  position: absolute;
  top: $top;
  left: $left;
  right: $right;
  bottom: $bottom;
}

/* common styles !!!YOU DON'T NEED THEM  */
body {
  font: {
    family: 'Hind', sans-serif;;
    size: 16px;
  }
}

.container {
  width: 950px;
  margin: 50px auto 0px auto;
  text-align:  center;
}

h1 {
  margin: 0;

  font: {
    weight: 400;
    size: 35px;
  }

  span {
    font: {
      family: 'Bad Script', cursive;
      weight: bold;
    }
    text-decoration: underline wavy;
    color: $accent-theme-color;
  }
}

.link {
  display: flex;
  justify-content: center;
  width: 80%;
  margin: 30px auto 0;

  a {
    margin-right: 20px;
    
    color: #1f1f1f;
    font: {
      size: 17px;
    }
    display: inline-block;
    
    &:last-child {
      margin-right: 0;
    }

    i {
      color: $accent-theme-color;
      margin-right: 5px
    }
  }
}

.content-block {
  margin-top: 50px;
  
  h2 {
    margin-bottom: 30px;
  }
}

.content-block__effect {
  margin-bottom: 50px;
}

.btn-block {
  display: flex;
  justify-content: space-between;
}

.btn-hover-effect {
  display: flex;
  
  font: {
    family: Arial;
    size: 17px;
  }
  color: #fff;
  letter-spacing: 1px;
  line-height: 1;
  
  &:nth-child(1) {
    background-color: $btn-bg-1;
  }
  
  &:nth-child(2) {
    background-color: $btn-bg-2;
  }
  
  &:nth-child(3) {
    background-color: $btn-bg-3;
  }
  
  &:nth-child(4) {
    background-color: $btn-bg-4;
  }
  
  &:nth-child(5) {
    background-color: $btn-bg-5;
  }
}

/* effects styles !!!YOU NEED THEM */

/* don't forget to add your own background-color and text color */
.btn-hover-effect {
  @include transition-mix();
  
  position: relative;
  
  display: flex;
  align-items: center;
  padding: $btn-hover-effect-padding-vert $btn-hover-effect-padding-horz;
  
  transform: translateZ(0);
  
  text-decoration: none;
  
  overflow: hidden;
}

/* effect 1 styles */
.btn-hover-effect--effect-1 {  
  
  /* overlay block styles */
  &:before {
    @include position-absolute($top: 0, $left: 0);
    @include transition-mix($property: transform);
    
    display: block;
    width: 100%;
    height: 100%;
    
    content: '';
    
    background-color: rgba(255,255,255, .2);
    
    transform: scale(0, 1);
    transform-origin: right top;
    
    z-index: -1;
  }
  
  /* icon styles */
  &:after {
    @include position-absolute($top: 1px, $right: (- $icon-block-width));
    @include transition-mix();
    
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: $icon-block-width;
    
    content: '\f105';
    
    font: {
      family: "Font Awesome 5 Free";
      size: 25px;
      weight: 900;
    }
    line-height: inherit;
    
    opacity: 0;
  }
  
  //hover styles
  &:hover {
    padding-left: $btn-hover-effect-padding-horz - 10;
    padding-right: $btn-hover-effect-padding-horz + 10;
    
    &:before {
      transform: scale(1, 1);
      
      transform-origin: left top;
    }
    
    &:after {
      right: 0;
      
      opacity: 1;
    }
  }
  
}

/* effect #2 */
.btn-hover-effect--effect-2 {
  
  /* overlay styles */
  &:before {
   @include position-absolute($top: 50%, $left: 50%);
   @include transition-mix($property: transform);
    
    display: block;
    width: 200%;
    height: 200%;
    
    content: '';
    
    transform: translate(-50%, -50%) scale(0);
    transform-origin: center top;
    
    background-color: rgba(255,255,255, .2);
    border-radius: 50%;
   
    z-index: -1;
  }
  
  /* icon styles */
  &:after {
    @include position-absolute($top: 1px, $right: 0);
    
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    width: $icon-block-width;
    
    content: '\f105';
    
    font: {
      family: "Font Awesome 5 Free";
      size: 25px;
      weight: 900;
    }
    line-height: inherit;
    
    transform: scale(1.5);
    
    opacity: 0;
  }
  
  &:hover {
    padding-left: $btn-hover-effect-padding-horz - 10;
    padding-right: $btn-hover-effect-padding-horz + 10;
    
    &:before {
      transform: translate(-50%, -50%) scale(1);

      transform-origin: center bottom;
    }
    
    &:after {
      @include transition-mix();
      
      transform: scale(1);
      
      opacity: 1;
    }
  }
  
}

/* effect #3 */
.btn-hover-effect--effect-3 {
  
  /* overlay styles */
  &:before{
   @include position-absolute($top: 0, $left: 0);
   @include transition-mix($property: transform);
    
    display: block;
    width: 100%;
    height: 100%;
    
    content: '';
    
    transform: scale(1, 0);
    transform-origin: center bottom;
    
    background-color: rgba(255,255,255, .15);
    
    z-index: -1;
  }
  
  /* icon styles */
  &:after {
    @include position-absolute($top: 0, $left: 0);
    @include transition-mix($property: transform, $delay: .2s);
    
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    
    content: '\f30b';
    
    font: {
      family: "Font Awesome 5 Free";
      size: 30px;
      weight: 900;
    }
    line-height: inherit;
    color: transparent;
    
    transform: scale(1, 0);
    transform-origin: center bottom;
    
    background-color: rgba(255,255,255, .15);
  }
  
  &:hover {
    color: transparent;
    
    &:before {
      transition-duration: .15s;
      
      transform: scale(1, 1);
      transform-origin: center top;
    }
    
    &:after {
      transition-duration: .15s;
      
      transform: scale(1, 1);
      transform-origin: center top;
      
      color: #fff;
    }
  }
}

/* effect #4 */
.btn-hover-effect--effect-4 {
  
  /* overlay styles */
  &:before {
   @include position-absolute($top: 0, $left: 0);
   @include transition-mix($property: transform);
    
    display: block;
    width: 300%;
    height: 300%;
    
    content: '';
    
    transform: scale(.5);
    transform-origin: center center;
    
    background-color: rgba(255,255,255, .2);
    
    border-radius: 50%;
    
    z-index: -1;
  }
  
  /* icon styles */
  &:after {
    @include position-absolute($top: 0, $left: 0);
    
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    
    content: '\f30b';
    
    font: {
      family: "Font Awesome 5 Free";
      size: 30px;
      weight: 900;
    }
    line-height: inherit;
    color: transparent;
    
    transform: scale(1.4);
  }
  
  &:hover {
    color: transparent;
    
    &:before {
      transform: scale(2);
      transform-origin: center center;
    }
    
    &:after {
      @include transition-mix($delay: .2s);
      
      color: #fff;
      
      transform: scale(1);
    }
  }
}

/* effect #5 */
.btn-hover-effect--effect-5 {
  
  /* overlay styles */
  &:before {
   @include position-absolute($top: 50%, $left: 50%);
   @include transition-mix($property: transform);
    
    display: block;
    width: 300px;
    height: 300px;
    
    content: '';
    
    transform: translate(-50%, -50%) scale(0);
    transform-origin: center center;
    
    background-color: rgba(255,255,255, .15);
    border-radius: 50%;
    
    z-index: -1;
  }
  
  /* icon styles */
  &:after {
    @include position-absolute($top: 50%, $left: 50%);
    transition: transform .2s linear .2s, opacity .2s linear .2s;
    
    display: flex;
    align-items: center;
    justify-content: center;
    width: 300px;
    height: 300px;
    
    content: '\f30b';
    
    font: {
      family: "Font Awesome 5 Free";
      size: 30px;
      weight: 900;
    }
    line-height: inherit;
    color: transparent;
    
    transform: translate(-50%, -50%) scale(0);
    transform-origin: center center;
    
    background-color: rgba(255,255,255, .15);
    border-radius: 50%;
    opacity: 0;
    
    z-index: -1;
  }
  
  &:hover {
    
    color: transparent;
    
    &:before {
      transition-duration: .15s;
      
      transform: translate(-50%, -50%) scale(1);
      
      opacity: 1;
    }
    
    &:after {
      transition-duration: .15s;
      
      transform: translate(-50%, -50%) scale(1);
      opacity: 1;
      
      color: #fff;
    }
  }
}
!

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