.sidebar {
    position: fixed;
    z-index: 88;
    right: 10px;
    bottom: 15%;
    padding: 8px;
    box-shadow: 0 5px 5px #888888;
    border-radius: 10px;
    background-color: #ffc107;
}

.sidebar > div {
    cursor: pointer;
    text-align: center;
}

.sidebar > div img {
    width: 40px;
}

.sidebar > div h3 {
    font-size: 15px;
    font-weight: 500;
    color: #fff;
}

.sidebar > div .code {
    display: none;
    position: absolute;
    z-index: 9;
    top: 55%;
    right: 90px;
    border-radius: 8px;
    box-shadow: 0 6px 12px 0 rgba(106, 115, 133, 0.22);
    background-color: #ffffff;
}

.sidebar > div .code:after {
    position: absolute;
    top: 33%;
    left: 100%;
    content: '';
    transform: translateY(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: transparent transparent transparent #ffffff;
    width: 200px;
}

.sidebar-wechat:hover .code {
    display: block;
}