button with shadow

by Alexandru Gatea

HTML

<div class="button">
  <a href="#!" class="btn">Hover me!</a>
</div>

CSS

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background: #f5f5f5;
}

.button {
  position: relative;
  padding-top: 75px;
  width: 165px;
  margin: auto;
  transition: all 0.5s ease;
}

.button:after {
  content: "";
  opacity:0.6;
  width: 100%;
  left: 0;
  right: 0;
  margin: auto;
  height: 8px;
  position: absolute;
  bottom: -5px;
  transition: all 0.5s ease;
  /* Permalink - use to edit and share this gradient: http://colorzilla.com/gradient-editor/#000000+0,000000+100&0.65+0,0+70 */
  background: -moz-radial-gradient(center, ellipse cover, rgba(0, 0, 0, 0.65) 0%, rgba(0, 0, 0, 0) 70%, rgba(0, 0, 0, 0) 100%);
  /* FF3.6-15 */
  background: -webkit-radial-gradient(center, ellipse cover, rgba(0, 0, 0, 0.65) 0%, rgba(0, 0, 0, 0) 70%, rgba(0, 0, 0, 0) 100%);
  /* Chrome10-25,Safari5.1-6 */
  background: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.65) 0%, rgba(0, 0, 0, 0) 70%, rgba(0, 0, 0, 0) 100%);
  /* W3C, IE10+, FF16+, Chrome26+, Opera12+, Safari7+ */
  filter: progid: DXImageTransform.Microsoft.gradient( startColorstr='#a6000000', endColorstr='#00000000', GradientType=1);
  /* IE6-9 fallback on horizontal gradient */
}

.button:hover:after {
  width: 55%;
  opacity: 0.4;
}

.btn {
  display: block;
  margin: auto;
  width: 165px;
  padding: 0 15px;
  line-height: 40px;
  background: #e80237;
  color: #fff;
  text-decoration: none;
  text-align: center;
  font-family: sans-serif;
  font-size: 13px;
  position: relative;
  transition: all 0.6s ease;
  top: 0;
  border-radius: 2px;
}

.button:hover .btn {
  top: -8px;
}

.button:hover .btn {
  opacity: 0.95;
}

.button:hover .btn:after {
  left: 120%;
}

.btn:after {
  content: "";
  display:block;
  width: 30px;
  height: 60px;
  position:absolute;
  top: -10px;
  left: -100%;
  background: rgba(255,255,255,0.1);
  transform: rotate(30deg);
  transition: all 0.5s ease-in-out;
}

.button a {
  overflow:hidden;
  display:block;
}