.rotate {
  -webkit-transition:all 0.5s ease-out;
  -moz-transition:all 0.5s ease-out;
  -ms-transition:all 0.5s ease-out;
  -o-transition:all 0.5s ease-out;
  transition:all 0.5s ease-out;
}

.rotate:hover {
  -webkit-transform:rotate(360deg);
  -moz-transform:rotate(360deg);
  -ms-transform:rotate(360deg);
  -o-transform:rotate(360deg);
  transform:rotate(360deg);
}

.grow {
  
  width: 150px; 
  height: 40px; 
  -webkit-transition:all 0.5s ease-out;
  -moz-transition:all 0.5s ease-out;
  -ms-transition:all 0.5s ease-out;
  -o-transition:all 0.5s ease-out;
  transition:all 0.5s ease-out;
  margin-right:auto; 
  margin-left:auto;
  margin-bottom:15px;
}

.grow:hover {
  -webkit-transform:scale(1.3);
  -moz-transform:scale(1.3);
  -ms-transform:scale(1.3);
  -o-transform:scale(1.3);
  transform:scale(1.3);
}