.main_content{
	min-height:600px;
}

#display img{
   width:20%;
   margin:1%;
}

#number{
  clear:both;
}

#number canvas{
  cursor: pointer;
  opacity:0.7;
  margin:10px;
}

#number canvas:hover{
  opacity:1;
} 

#number canvas:active{
  -moz-transform: rotate(-5deg);
  -webkit-transform: rotate(-5deg);
  -o-transform: rotate(-5deg);
  -ms-transform: rotate(-5deg);
  transform: rotate(-5deg);
}