body {
    min-width: 320px;
    max-width: 750px;
    width: 10rem;
    margin: 0 auto;
    line-height: 1;
    font-family: Arial, Helvetica;
    background: #fff;
}
a {
    text-decoration: none;
    font-size: .3333rem;
}
@media screen and (min-width: 750px) {
    html {
        font-size: 75px !important;
    }
}
.search_content {
    display: flex;
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 10rem;
    height: 1.1733rem;
    background-color: #ffc001;
}
.classify {
    width: .5867rem;
    height: .9333rem;
    background: url(../images/classify.png) no-repeat;
    background-size: .5867rem .9333rem;
    margin: .1467rem .3333rem .1333rem;
}
.search {
    flex: 1;
}
.search input {
    width: 100%;
    height: .88rem;
    margin-top: .1333rem;
    padding-left: .7333rem;
    color: #757575;
    font-size: .3333rem;
    background-color: #fff2cc;
    border-radius: .44rem;
    border: 0;
    outline: none;
}
.login {
    width: 1rem;
    height: .9333rem;
    margin: .1333rem;
    color: #fff;
    font-size: .3333rem;
    line-height: .9333rem;
    text-align: center;
}
.banner {
    width: 10rem;
    height: 4.9067rem;
}
.banner img {
    width: 100%;
}
.ad {
    display: flex;
}
.ad a {
    flex: 1;
}
.ad a img {
    width: 100%;
}
nav {
    width: 10rem;
}
nav a {
    float: left;
    width: 2rem;
    height: 1.8667rem;
    text-align: center;
}
nav a img {
    display: block;
    width: 1.0933rem;
    height: 1.0933rem;
    margin: .18rem auto .28rem;
}
nav a span {
    color: #333;
    font-size: .3333rem;
}