.ca-menu{
    padding:0;
    margin:20px auto;
    width: 1020px;
}
.ca-menu {
    width: 230px;
    height: 230px;
    border: 10px solid #f6f6f6;
    overflow: hidden;
    position: relative;
    float:left;
    margin: 5px 10px;
    background-size: 250px, 250px;
    -webkit-box-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    -moz-box-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    box-shadow: 1px 1px 2px rgba(0,0,0,0.2);
    -webkit-border-radius: 125px;
    -moz-border-radius: 125px;
    border-radius: 125px;
    -webkit-transition: all 400ms linear;
    -moz-transition: all 400ms linear;
    -o-transition: all 400ms linear;
    -ms-transition: all 400ms linear;
    transition: all 400ms linear;
}
.ca-menu:last-child{
    margin-right: 0px;
}
.ca-menu a{
    text-align: center;
    width: 100%;
    height: 100%;
    display: block;
    color: #ffffff;
    position: relative;
}
.ca-main{
    font-size: 25px;
    position: absolute;
    top: 95px;
    height: 80px;
    width: 170px;
    left: 50%;
    margin-left: -85px;
    text-shadow: -1px 0 black, 0 1px black, 1px 0 black, 0 -1px black;
    opacity: 0.8;
    text-align: center;
}
.ca-sub{
    text-align:center;
    color: #000;
    font-size: 26px;
    position: absolute;
    height: 80px;
    width: 170px;
    left: 50%;
    margin-left: -85px;
    top: 95px;
    opacity: 0;
    text-shadow: -1px 0 white, 0 1px white, 1px 0 white, 0 -1px white;
    -webkit-transition: all 400ms linear;
    -moz-transition: all 400ms linear;
    -o-transition: all 400ms linear;
    -ms-transition: all 400ms linear;
    transition: all 400ms linear;
}
.ca-menu:hover{
    background: #f7f7f7;
    border-color: rgba(0, 188, 212, 1);
    -webkit-transform: rotate(360deg);
    -moz-transform: rotate(360deg);
    -o-transform: rotate(360deg);
    -ms-transform: rotate(360deg);
    transform: rotate(360deg);
    background-size: 250px, 250px;
}
.ca-menu:hover .ca-icon{
    color: #000000;
    font-size: 60px;
}
.ca-menu:hover .ca-main{
    display: none;
}
.ca-menu:hover .ca-sub{
    opacity: 0.8;
}