Анимированные кнопки на CSS3

<div class="container" id="container">
  <div class="buttons">
  <a href="#" class="but1">
  <span class="icon"></span>
  <span class="title">Кнопка #1</span>  
  <span class="icon2"></span>
  </a>
  <a href="#" class="but1">
  <span class="icon"></span>
  <span class="title">Кнопка #2</span>  
  <span class="icon2"></span>
  </a>
  <a href="#" class="but1">
  <span class="icon"></span>
  <span class="title">Кнопка #3</span>  
  <span class="icon2"></span>
  </a>
  <div style="clear:both"></div>

  <a href="#" class="but2">
  <span class="title">Присоединяйтесь</span>  
  <span class="extra"><span>Бесплатно</span></span>
  <span class="icon"></span>
  </a>
  <a href="#" class="but2">
  <span class="title">Искать</span>
  <span class="extra"><input type="text" /></span>
  <span class="icon"></span>
  </a>
  <a href="#" class="but2">
  <span class="title">Подписка</span>
  <span class="extra"><input type="text" /></span>
  <span class="icon"></span>
  </a>
  </div>
  </div>

/*Набор #1*/
.buttons {
  overflow:hidden;
}
.but1{
  border-radius:10px;
  -moz-border-radius:10px;
  -webkit-border-radius:10px;

  box-shadow:0px 0px 7px rgba(0,0,0,0.4) inset, 0px 0px 0px 4px rgba(255,255,255,0.1);
  -moz-box-shadow:0px 0px 7px rgba(0,0,0,0.4) inset, 0px 0px 0px 4px rgba(255,255,255,0.1);
  -webkit-box-shadow:0px 0px 7px rgba(0,0,0,0.4) inset, 0px 0px 0px 4px rgba(255,255,255,0.1);

  background-color:#f4f5fe;
  display:block;
  float:left;
  margin:10px;
  overflow:hidden;
  padding:10px 15px;
  position:relative;
  text-decoration:none;

  transition:all 0.5s ease-in-out;
  -moz-transition:all 0.5s ease-in-out;
  -o-transition:all 0.5s ease-in-out;
  -webkit-transition:all 0.5s ease-in-out;
}
.but1 .icon{
  background:transparent url(../images/download.png) no-repeat top left;
  float:left;
  height:32px;
  width:45px;

  transition:all 0.5s ease-in-out;
  -moz-transition:all 0.5s ease-in-out;
  -o-transition:all 0.5s ease-in-out;
  -webkit-transition:all 0.5s ease-in-out;
}
.but1 .title{
  font-size:18px;
  color:#000;
  display:block;
  float:left;
  font-weight:bold;
  line-height:32px;
}
.but1 .icon2{
  background:transparent url(../images/download2.png) no-repeat top left;
  height:32px;
  left:20px;
  opacity:0;
  position:absolute;
  top:-15px;
  width:32px;
}
.but1:hover{
  background-color:#e3e3ff;

  box-shadow:0px 0px 4px rgba(0,0,0,0.5) inset, 0px 0px 0px 4px rgba(51,51,204,0.5);
  -moz-box-shadow:0px 0px 4px rgba(0,0,0,0.5) inset, 0px 0px 0px 4px rgba(51,51,204,0.5);
  -webkit-box-shadow:0px 0px 4px rgba(0,0,0,0.5) inset, 0px 0px 0px 4px rgba(51,51,204,0.5);

  -webkit-transition-delay: 0.5s;
  -moz-transition-delay: 0.5s;
  -o-transition-delay: 0.5s;
  -ms-transition-delay: 0.5s;
  transition-delay: 0.5s;
}
.but1:hover .icon{
  transform:rotate(-90deg) scale(0.8);
  -ms-transform:rotate(-90deg) scale(0.8);
  -moz-transform:rotate(-90deg) scale(0.8);
  -o-transform:rotate(-90deg) scale(0.8);
  -webkit-transform:rotate(-90deg) scale(0.8);
}
.but1:active .icon{
  opacity:0;
}
.but1:active .icon2{
  opacity:1;
  -webkit-animation:slideDown1 1.0s linear infinite;
  -moz-animation:slideDown1 1.0s linear infinite;
  animation:slideDown1 1.0s linear infinite;
}
.but1:active{
  background-color:#c1c1ff;

  box-shadow:0 2px 4px rgba(0, 0, 0, 0.5) inset, 0px 0px 0px 4px rgba(51,51,204,0.8);
  -moz-box-shadow:0 2px 4px rgba(0, 0, 0, 0.5) inset, 0px 0px 0px 4px rgba(51,51,204,0.8);
  -webkit-box-shadow:0 2px 4px rgba(0, 0, 0, 0.5) inset, 0px 0px 0px 4px rgba(51,51,204,0.8);
}

@keyframes slideDown1{
  0% {
  top: -30px;
  }
  100% {
  top: 55px;
  }
}
@-webkit-keyframes slideDown1{
  0% {
  top: -30px;
  }
  100% {
  top: 55px;
  }
}
@-moz-keyframes slideDown1{
  0% {
  top: -30px;
  }
  100% {
  top: 55px;
  }
}

/*Набор #2*/
.but2{
  border-radius:15px;
  -moz-border-radius:15px;
  -webkit-border-radius:15px;

  background-color:#99cc99;
  float:left;
  height:40px;
  margin:10px;
  overflow:hidden;
  padding-left:20px;
  position:relative;
  text-decoration:none;

  transition:all 0.5s linear;
  -moz-transition:all 0.5s linear;
  -o-transition:all 0.5s linear;
  -webkit-transition:all 0.5s linear;
}
.but2 .title{
  color:#000000;
  display:block;
  float:left;
  font-size:18px;
  font-weight:bold;
  line-height:40px;

  transition:all 0.2s linear;
  -moz-transition:all 0.2s linear;
  -o-transition:all 0.2s linear;
  -webkit-transition:all 0.2s linear;
}
.but2 .extra{
  background-color:#63707e;
  color:#fff;
  float:left;
  font-size:18px;
  line-height:40px;
  opacity:0;
  position:relative;
  text-transform:uppercase;
  width:0px;

  transition:all 0.3s linear;
  -moz-transition:all 0.3s linear;
  -o-transition:all 0.3s linear;
  -webkit-transition:all 0.3s linear;
}
.but2 .extra span, .but2 .extra input {
  display:none;
}
.but2 .icon{
  background:transparent url(../images/right.png) no-repeat center center;
  float:left;
  height:40px;
  width:40px;

  transition:all 0.3s linear;
  -moz-transition:all 0.3s linear;
  -o-transition:all 0.3s linear;
  -webkit-transition:all 0.3s linear;
}
.but2:hover .extra span, .but2:hover .extra input{
  display:inline-block;
}
.but2:hover .extra{
  margin-left:10px;
  opacity: 1;
  padding-left:10px;
  padding-right:10px;
  text-align:center;
  width:150px;
}
.but2:hover .icon{
  transform:rotate(180deg);
  -ms-transform:rotate(180deg);
  -moz-transform:rotate(180deg);
  -o-transform:rotate(180deg);
  -webkit-transform:rotate(180deg);
}