Create animated effect buttons with pure CSS

<div class="button01">
      <a href="#">Download</a>
      <p class="top">click to begin</p>
      <p class="bottom">1.2MB .zip</p></div>

.button01 {
 width: 200px;
 margin: 50px auto 20px auto;}.button01 a {
 display: block;
 height: 50px;
 width: 200px;

 /*TYPE*/
 color: white;
 font: 17px/50px Helvetica, Verdana, sans-serif;
 text-decoration: none;
 text-align: center;
 text-transform: uppercase;

 /*GRADIENT*/  
 background: #00b7ea; /* Old browsers */
 background: -moz-linear-gradient(top, #00b7ea 0%, #009ec3 100%); /* FF3.6+ */
 background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#00b7ea), color-stop(100%,#009ec3)); /* Chrome,Safari4+ */
 background: -webkit-linear-gradient(top, #00b7ea 0%,#009ec3 100%); /* Chrome10+,Safari5.1+ */
 background: -o-linear-gradient(top, #00b7ea 0%,#009ec3 100%); /* Opera 11.10+ */
 background: -ms-linear-gradient(top, #00b7ea 0%,#009ec3 100%); /* IE10+ */
 background: linear-gradient(top, #00b7ea 0%,#009ec3 100%); /* W3C */
 filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00b7ea', endColorstr='#009ec3',GradientType=0 ); /* IE6-9 */}.button01 a, p {
   -webkit-border-radius: 10px;
    -moz-border-radius: 10px;
         border-radius: 10px;

 -webkit-box-shadow: 2px 2px 8px rgba(0,0,0,0.2);
    -moz-box-shadow: 2px 2px 8px rgba(0,0,0,0.2);
         box-shadow: 2px 2px 8px rgba(0,0,0,0.2);}p {
 background: #222;
 display: block;
 height: 40px;
 width: 180px; 
 margin: -50px 0 0 10px;

 /*TYPE*/
 text-align: center;
 font: 12px/45px Helvetica, Verdana, sans-serif;
 color: #fff;

 /*POSITION*/
 position: absolute;
 z-index: -1;

 /*TRANSITION*/  
 -webkit-transition: margin 0.5s ease;
    -moz-transition: margin 0.5s ease;
      -o-transition: margin 0.5s ease;
     -ms-transition: margin 0.5s ease;
         transition: margin 0.5s ease;}/*HOVER*/.button01:hover .bottom {
 margin: -10px 0 0 10px;}.button01:hover .top {
 margin: -80px 0 0 10px;
 line-height: 35px;}/*ACTIVE*/.button01 a:active {
 background: #00b7ea; /* Old browsers */
 background: -moz-linear-gradient(top,  #00b7ea 36%, #009ec3 100%); /* FF3.6+ */
 background: -webkit-gradient(linear, left top, left bottom, color-stop(36%,#00b7ea), color-stop(100%,#009ec3)); /* Chrome,Safari4+ */
 background: -webkit-linear-gradient(top,  #00b7ea 36%,#009ec3 100%); /* Chrome10+,Safari5.1+ */
 background: -o-linear-gradient(top,  #00b7ea 36%,#009ec3 100%); /* Opera 11.10+ */
 background: -ms-linear-gradient(top,  #00b7ea 36%,#009ec3 100%); /* IE10+ */
 background: linear-gradient(top,  #00b7ea 36%,#009ec3 100%); /* W3C */
 filter: progid:DXImageTransform.Microsoft.gradient( startColorstr='#00b7ea', endColorstr='#009ec3',GradientType=0 ); /* IE6-9 */}.button01:active .bottom {
 margin: -20px 0 0 10px;}.button01:active .top {
 margin: -70px 0 0 10px;