.sidebar {
    width: 70px;
    height: 280px;
    position: fixed;
    right: 0;
    bottom: 20%;
    z-index: 999;
    text-align: center;
    -webkit-font-smoothing:antialiased;
}
.sidebar .pic {
    width: 70px;
    height: 70px;
    position: relative;
}
.sidebar .pointer {
    cursor: pointer
}
.sidebar .pic img {
    width: 100%;
    height: 100%;
    border:0
}
.sidebar .wximg {
    width: 100px;
    height: 100px;
    position: absolute;
    left: -70px;
    top: 0;
}
.sidebar .dlimg {
    width: 100px;
    height: 100px;
    position: absolute;
    left: -70px;
    top: 0;
}