/* side */

.side {
    position: fixed;
    width: 30px;
    left: 50%;
    margin-left: -720px;
    top: 30%;
    z-index: 100;
    display: none;
}

.side ul li {
    width: 30px;
    height: 30px;
    float: left;
    position: relative;
    margin-bottom: 2px;
    color: #333333;
}

.side ul li .sidebox {
    position: absolute;
    width: 30px;
    height: 30px;
    line-height: 30px;
    top: 0;
    right: 0;
    transition: all 0.3s;
    color: #fff;
    line-height: 30px;
    font-weight: bold;
    overflow: hidden;
}


.side ul li:nth-child(1) .sidebox { background: #4a4a4a; }
.side ul li:nth-child(2) .sidebox { background: #919fab; }
.side ul li:nth-child(3) .sidebox { background: #1b5f50; }
.side ul li:nth-child(4) .sidebox { background: #5a92e3; }


.side ul li .sidebox span {
    width: 30px;
    text-align: center;
    display: inline-block;　　
    float: left;
}

.side ul li a:hover .sidebox,.side ul li.current a .sidebox { width: 130px !important; }

.side ul li a:hover .sidebox,.side ul li.current a .sidebox { color: #fff; }

.side ul li .sidetop {
    width: 30px;
    height: 30px;
    line-height: 30px;
    transition: all 0.3s;
    background: #eeeeee;
    color: #9f9ea7;
    overflow: hidden;
}

.side ul li .sidetop:hover {
   background: rgba(0,0,0,0.8);
}