<div class="wrapper">
  <button>
    <i class="fas fa-fingerprint"></i>
  </button>
</div>
body{
  padding: 0px;
  margin: 0px;
  background-color: rgb(34, 31, 40);
}
*, ::before, ::after{
  box-sizing: border-box;
}
.wraper{
  width: 20 0px;
  height: 200px;
  position: absolute;
  left: 50%;
  top:50%;
  transform: translate(-50%,-50%);
}
button{
  width: 200px;
  height: 200px;
  position: absolute;
  left: 50%;
  top:50%;
  transform: translate(-50%,-50%) scale(1);
  border-style: none;
  outline: none;
  cursor: pointer;
  border-radius: 50%;
  background: rgb(34, 31, 40);
  background: linear-gradient(-45deg, rgb(34, 31, 40) 0%, rgb(40, 33, 38) 100%);    box-shadow: -2px -7px 10px #312d38, 4px 6px 10px #0d0c0f;
  transition: all .3s;
}
button:active{
  background:  rgb(24, 20, 28);
  background: linear-gradient(45deg, rgb(24, 20, 28) 0%, rgb(44, 40, 48) 100%);    box-shadow: 
    -2px -7px 10px #0d0c0f, 
    4px 6px 10px #312d38,
    inset -2px -7px 10px #0d0c0f, 
    inset 4px 6px 10px #312d38;
  transition: all .3s;
  transform: translate(-50%,-50%) scale(.95);
}
button i{
  font-size: 40px;
  background: linear-gradient(-45deg, gold 0%, lightgoldenrodyellow 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: all .3s;
}
button:active i{
  transform: scale(.9);
  transition: all .3s;
}







/*  footer   */
footer {
    background-color: #222;
    color: #fff;
    font-size: 14px;
    bottom: 0;
    position: fixed;
    left: 0;
    right: 0;
    text-align: center;
    z-index: 999;
}

footer p {
    margin: 10px 0;
    font-family: 'Lucida Sans', 'Lucida Sans Regular', 'Lucida  Grande', 'Lucida Sans Unicode', Geneva, Verdana, sans-serif;
}
footer .fa-heart{
    color: red;
}
footer .fa-dev{
    color: #fff;
}
footer .fa-twitter-square{
  color:#1da0f1;
}
footer .fa-instagram{
  color: #f0007c;
}
fotter .fa-linkedin{
  color:#0073b1;
}
footer .fa-codepen{
  color:#fff
}
footer a {
    color: #3c97bf;
    text-decoration: none;
  margin-right:5px;
}
.youtubeBtn{
    position: fixed;
    left: 50%;
  transform:translatex(-50%);
    bottom: 45px;
    cursor: pointer;
    transition: all .3s;
    vertical-align: middle;
    text-align: center;
    display: inline-block;
}
.youtubeBtn i{
   font-size:20px;
  float:left;
}
.youtubeBtn a{
    color:#ff0000;
    animation: youtubeAnim 1000ms linear infinite;
  float:right;
}
.youtubeBtn a:hover{
  color:#c9110f;
  transition:all .3s ease-in-out;
  text-shadow: none;
}
.youtubeBtn i:active{
  transform:scale(.9);
  transition:all .3s ease-in-out;
}
.youtubeBtn span{
    font-family: 'Lato';
    font-weight: normal;
    color: #000;
    display: block;
    font-size: 12px;
    float: right;
    line-height: 20px;
    padding-left: 5px;
  
}

@keyframes youtubeAnim{
  0%,100%{
    color:#c9110f;
  }
  50%{
    color:#ff0000;
  }
}
/* footer  */

External CSS

  1. https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.14.0/css/all.min.css

External JavaScript

This Pen doesn't use any external JavaScript resources.