.rotate{
    -webkit-transition-duration: 0.5s;
    -moz-transition-duration: 0.5s;
    -ms-transition-duration: 0.5s;
    -o-transition-duration: 0.5s;
    transition-duration: 0.5s;
    /*
    -webkit-transform-origin:50% 50%;
    -moz-transform-origin:50% 50%;
    -ms-transform-origin:50% 50%;
    -o-transform-origin:50% 50%;
    transform-origin:50% 50%;
    */
    -webkit-transition-property: -webkit-transform;
    -moz-transition-property: -moz-transform;
    -ms-transition-property: -ms-transform;
    -o-transition-property: -o-transform;
    transition-property: transform;
 
    overflow:hidden;
 
    }  
 
.rotate:hover
{
    -webkit-transform:rotate(70deg);
    -moz-transform:rotate(70deg);
    -ms-transform:rotate(70deg);
    -o-transform:rotate(70deg);
    transform:rotate(70deg);
    
}