after&before

after-before.markdown

after&before

A Pen by Mohammed Ali on CodePen.

License.

index.html

<button class="btn-1">hover</button>
<button class="btn-2">hover</button>
<button class="btn-3">hover</button>
<button class="btn-4">hover</button>

style.css

body
{
  background-color: #4CAF50;
 text-align: center;
}

button
{
  padding: 15px 35px;
  margin: 50px 10px;
  border: 3px solid #fff;
  background: none;
  display: inline-block;
  cursor: pointer;
  color: #fff;
  font-size: 20px;
  font-weight: bold;
  text-transform: uppercase;
  position: relative;
  -webkit-transition:  all 0.3s;
  -moz-transition:  all 0.3s;
  transition:  all 0.3s;

}

.btn-1::before,
.btn-1::after
{
   content: "";
  background: #fff;
  position: absolute;
  z-index: -1;
  top: 0;
  right: 0;
  width:0;
  height: 100%;
  -webkit-transition:  all 0.3s;
  -moz-transition:  all 0.3s;
  transition:  all 0.3s;
}
button:hover{
  color: #4CAF50;
}
.btn-1:hover:before
{
  width: 100%;
}

.btn-2::before,
.btn-2::after
{
   content: "";
  background: #fff;
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  width:100%;
  height: 0;
  -webkit-transition:  all 0.3s;
  -moz-transition:  all 0.3s;
  transition:  all 0.3s;
}
.btn-2:hover:before
{
  height: 100%;
}

.btn-3::before,
.btn-3::after
{
   content: "";
  background: #fff;
  position: absolute;
  z-index: -1;
  top: 0;
  left: 0;
  width:0;
  height: 100%;
  -webkit-transition:  all 0.3s;
  -moz-transition:  all 0.3s;
  transition:  all 0.3s;
}
.btn-3:hover:after
{
  width: 100%;
}

.btn-4::before,
.btn-4::after
{
   content: "";
  background: #fff;
  position: absolute;
  z-index: -1;
  bottom: 0;
  left: 0;
  width:100%;
  height: 0;
  -webkit-transition:  all 0.3s;
  -moz-transition:  all 0.3s;
  transition:  all 0.3s;
}
.btn-4:hover:before
{
  height: 100%;
}
.btn-4:hover:before
{
  height: 100%;
}