.ruFloat {
    position: absolute;
    cursor: pointer;
    z-index: 1000;
    float: right;
    top: 250px;
    overflow: hidden;
}

.ruFloat .float_menu{
    float: right;
    text-align: right;
    margin-left: 5px;
}

.luFloat {
    position: absolute;
    cursor: pointer;
    z-index: 1000;
    float: left;
    top: 250px;
    overflow: hidden;
}

.luFloat .float_menu{
    float: left;
    text-align: left;
    margin-right: 5px;
}

.float_menu a{
    display: inline-block;
    position: relative;
}

.float_menu a img:nth-child(2){
    display: none;
}

.float_menu a:hover img:nth-child(1){
    display: none;
}

.float_menu a:hover img:nth-child(2){
    display: inline-block;
}

body {
    overflow-x: hidden;
}