.activity-header {
    position: fixed;
    height: 1rem;
    width: 100%;
    background:  rgba(172,172,172, 0.5);
    z-index: 2;
    /* top: -1rem;
    transition: top 0.5s; */
}

.activity-header.show {
    top: 0;
}

.activity-header-logo {
    width: 1.73rem;
    height: 0.52rem;
    background: url(../../img/pc/top_logo.png) no-repeat top center;
    background-size: 100%;
    float: left;
    margin-top: 0.22rem;
    margin-left: 0.41rem;
}

.activity-header-btn {
    float: right;
    width: 1.42rem;
    height: 0.39rem;
    line-height: 0.39rem;
    background: #FFFFFF;
    box-shadow: 0px 0.03rem 0.08rem 0px rgba(0, 0, 0, 0.3);
    border-radius: 0.05rem;
    margin-top: 0.3rem;
    margin-right: 0.53rem;
    text-align: center;
    font-size: 0.2rem;
    color: #3D3D3D;
    cursor: pointer;
    /* display: none; */
}