A CodePen by ganshoot.

index.html

<div id="Content">
  <div class="position-wrapper">
    <div class="circle-mask">
      <div class="inner-circle">Sliding Up</div>
    </div>
  </div>
</div>

Slide-Up-Circle-CSS3.markdown

Slide Up Circle CSS3

A circle sliding up realized with CSS3 only.

A CodePen by ganshoot.

style.css

#Content{
	position: relative;
	width: 180px;
	height: 180px;
	margin: 20px auto;
}
.position-wrapper{
  position: absolute;
  top: 0;
  left: 0;
  width: 182px;
  height: 182px;
}
.circle-mask{
  position: absolute;
  width: 180px;
  height: 0px;
  left: 0;
  top: auto;
  bottom: 0;
  overflow: hidden;
  
  /* Animation */ 
  animation: slidein 2s 1s infinite;
  -moz-animation: slidein 2s 1s infinite;
  -o-animation: slidein 2s 1s infinite;
  -webkit-animation: slidein 2s 1s infinite;
}
.inner-circle{
  width: 180px;
  height: 180px;
  background: tomato;
  border-radius: 100%;
  position: absolute;
  -webkit-box-shadow: 0 0 1px #CCC;
  box-shadow: 0 0 1px #CCC;

  font: 16px 'helvetica neue', arial;
  text-align: center;
  line-height: 180px;
  color: #FFF;
  text-shadow: 1px 1px 1px #333;
  
}

/* Keyframes */
@keyframes slidein{
  0%   { height: 0; }
  100% { height: 180px; }
}
@-webkit-keyframes slidein{
  0%   { height: 0; }
  100% { height: 180px; }
}
@-moz-keyframes slidein{
  0%   { height: 0; }
  100% { height: 180px; }
}
@-o-keyframes slidein{
  0%   { height: 0; }
  100% { height: 180px; }
}