@charset "utf-8";
header {
    position: relative;
    height: .88rem;
    line-height: .88rem;
    color: #fff;
    background: #1D1D1D;
    text-align: center;
    font-size: .36rem;
}

.versions-v3-hide{
    display: block!important;
}

.versions-v3-show{
    display: none!important;
}

.icon-retreat {
    display: inline-block;
    height: 100%;
    width: 1.4rem;
    position: absolute;
    left: 0;
    top: 0;
    font-size: .28rem;
}

.icon-retreat i {
    position: absolute;
    left: .34rem;
    top: 50%;
    -webkit-transform: translate(0, -50%);
    -moz-transform: translate(0, -50%);
    -ms-transform: translate(0, -50%);
    -o-transform: translate(0, -50%);
    transform: translate(0, -50%);
}

.header-rt {
    display: inline-block;
    height: 100%;
    width: 1.6rem;
    position: absolute;
    top: 0;
    font-size: .28rem;
    padding-right: .34rem;
    text-align: right;
    right: 0;
}

.header-rt i{
    font-size: .42rem;
    position: absolute;
    right: .34rem;
    top: 50%;
    -webkit-transform: translate(0, -50%);
    -moz-transform: translate(0, -50%);
    -ms-transform: translate(0, -50%);
    -o-transform: translate(0, -50%);
    transform: translate(0, -50%);
}