body,body * {
    padding: 0;
    margin: 0;
}

html,body {
    width: 100%;
    font-family: "PingFang SC", "Microsoft YaHei";
    margin: 0 auto;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.clearfix:after {
    content: '';
    line-height: 0;
    height: 0;
    clear: both;
    visibility: hidden;
    display: block;
}

.clearfix {
    zoom: 1;
}

ul, li {
    list-style: none;
}

a {
    text-decoration: none;
}

input, textarea,button {
    outline: none;
    border: none;
}

img {
    display: block;
    border: none;
}