.curve {
    -webkit-transition: all 0.5s ease;
       -moz-transition: all 0.5s ease;
         -o-transition: all 0.5s ease;
        -ms-transition: all 0.5s ease;
            transition: all 0.5s ease;
  }
   
  .curve:hover {
    -webkit-transform: rotate(-10deg);
       -moz-transform: rotate(-10deg);
         -o-transform: rotate(-10deg);
        -ms-transform: rotate(-10deg);
            transform: rotate(-10deg);
  }