.headerContent {
    display: flex;
    width: 100%;
    justify-content: space-between;
    align-items: center;
}

.clearfix:before,
.clearfix:after {
    display: none;
    content: "";
    line-height: 0;
}

.input {
    box-sizing: border-box;
    height: 0.7rem;
    border-radius: 1rem;
    background: #fff;
    border: none;
    padding: .1rem .66rem 0.1rem .66rem;
}

.headerContent .menu {
    margin-top: 0;
}

/* 底部 */
.clearfix.ft::before,
.clearfix.ft::after {
    display: table;
    content: "";
    line-height: 0;
}

/* 回到顶部 */
#back-to-top {
    opacity: 0;
    /* 初始状态不显示 */
    position: fixed;
    bottom: 2.8rem;
    right: .7rem;
    z-index: 9999;
    color: #fff;
    background-color: #285A8F;
    border-radius: 50%;
    width: .8rem;
    height: .8rem;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
    transition: opacity ease-in-out .15s
}


#back-to-top img {
    /* max-width: 100%;
    max-height: 100%; */
    width: .44rem;
    height: .44rem;
}

#back-to-top.show {
    /* display: block; */
    opacity: 1;
}

.serach-but img {
    width: 0.6rem;
    height: 0.58rem;
}