h1{
    color: #fff;
	font-weight: bold;
	font-family: Segoe Print;
	font-size: 40px;
	text-align: center;
}
.example_div {
    background-color: black;
    -webkit-transition: all 0.7s;
    -moz-transition: all 0.7s;
    -o-transition: all 0.7s;
    -ms-transition: all 0.7s;
    transition: all 0.7s;  
    
    cursor: pointer;
    width: 400px;
    height: 280px;
    font-size: 96px;
    padding-top: 120px;
    text-align: center;
}
.example_div:hover {
    background-color: yellowgreen; 
     
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    transform: rotate(360deg); 
     
    -webkit-border-radius:100%;
    -moz-border-radius: 100%;
    -o-border-radius: 100%;
    -ms-border-radius: 100%;
    border-radius: 100;
}