* {
    list-style: none;
    text-decoration: none;
    font-family: "Helvetica Neue", Helvetica, Arial, STHeiti-Light, STHeiti-Medium, "Microsoft YaHei","Microsoft JhengHei",STHeiti,MingLiu;
}

body {
    background-color: #EEEEEB;
}

.navbar {
    margin-bottom: 5px;
}

/* 去掉页面中 container 的 padding 自带15px */
section .container {
    padding-left: 10px;
    padding-right: 10px;
}

.top-ad .container {
    padding-left: 10px;
    padding-right: 10px;
}

.web-nav .container {
    padding-left: 10px;
    padding-right: 10px;
}

/* 顶部开始 */
.ad-box {
    margin-top: 0px;
    margin-bottom: 5px;
    display: flex;
    justify-content: space-evenly;
    flex-wrap: wrap;
}

.ad-box .ad-item {
    margin-top: 15px;
    width: 555px;
    height: 90px;
    background-color: gray;
    background-size: contain;
    background-repeat: no-repeat;
}


/* 导航格子 */

.web-box {
    margin: 15px 0;
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
}

.web-item a {
   
    text-decoration: none;
    font-size: 22px;
}

.web-item a li {
    display: flex;
    align-items: center;
    margin-top: 15px;
    width: 355px;
    height: 105px;
    background-color: #eeedf4;
    border: 1px solid #fff;
}

.web-item li:hover {
    border: 1px solid gray;;
}

.web-item a img{
    margin-left: 25px;
    width: 50px;
    background-size: contain;
    background-repeat: no-repeat;
}

.web-item li span {
    margin-left: 20px;
}

@media (max-width:400px) {

    .web-item a {
        font-size: 20px;
    }
    
    .web-item a li { 
        margin-top: 15px;
        width: 325px;
        height: 85px;
    }

}
@media (max-width:350px) {

    .web-item a {
        font-size: 18px;
    }
    
    .web-item a li { 
        margin-top: 15px;
        width: 290px;
        height: 75px;
    }

}
@media (max-width:330px) {

    .web-item a {
        font-size: 16px;
    }
    
    .web-item a li { 
        margin-top: 15px;
        width: 270px;
        height: 65px;
    }

}