* {
    padding: 0;
    margin: 0;
    list-style: none;
}
body{
    -moz-user-select:none;/*火狐*/
    -webkit-user-select:none;/*webkit浏览器*/
    -ms-user-select:none;/*IE10*/
    user-select:none;
}
a{
    text-decoration: none;
    color: #000;
}
.img {
    width: 100%;
    height: auto;

}

.top {
    width: 100%;
    height: 100px;
    padding-top: 20px;
    box-sizing: border-box;
}

.logot .logo {
    width: 65px;
    height: 25px;
    margin: 0 auto;
}

.logot .tool {
    background: url("https://fycoder.oss-cn-hangzhou.aliyuncs.com/web/xiyan/tool.png") no-repeat;
    background-size: 100%;
    width: 75px;
    height: 35px;
    position: absolute;
    top: 20px;
    right: 20px;
    /*float: right;*/
}

.logot a {
    display: inline-block;
    width: 35px;
    height: 35px;
    float: left;
}

.logo img {
    width: 100%;
    height: 100%;
}

.choice {
    width: 100%;
    height: 45px;
    margin-top: 20px;
}

.choice ul {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.choice ul li {
    cursor: pointer;
    font-size: 15px;
    text-align: center;
    line-height: 13px;

}
.choice ul li a{
    color: #888;
}
.choice ul li img {
    width: 18px;
    height: 18px;
}

.show .commodity {
    width: 100%;
    /*height: 1050px;*/
}

.show .commodity ul li {
    /*width: 145px;*/
    /*height: 300px;*/
    margin-left: 10%;
    width: 35%;
    display: inline-block;
    margin-bottom: 50px;
}

.show .commodity ul li img {
    width: 100%;
    height: auto;

}

.navigation {
    width: 100%;
    height: 100px;
    position: fixed;
    left: 0;
    bottom: 0;
    border: 3px solid rgb(243, 243, 243);
    box-sizing: border-box;
    background-color: #fff;
}

.navigation ul {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding-top: 20px;
    box-sizing: border-box;
}

.navigation ul li {
    cursor: pointer;
    height: 60px;
    width: auto;
    text-align: center;
}


.navigation ul li img {
    height: 80%;
}