body,
dd,
dl,
dt,
h1,
h2,
h3,
h4,
h5,
h6,
li,
ol,
p,
ul {
    margin: 0;
    padding: 0;
    list-style: none;
    color: #666;
    font-size: 12px;
    font-family: "微软雅黑"
}

a {
    text-decoration: none;
    color: #666
}

a:hover {
    color: #ca0000
}

img,
input {
    border: 0;
    outline-style: none;
    padding: 0;
    vertical-align: middle
}

.w {
    width: 720px;
    margin: 0 auto
}

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

.clearfix {
    zoom: 1
}

.left {
    float: left
}

.right {
    float: right
}
@media (max-width:720px) and (min-width:320px){
    html{
        font-size: 12px;
    }
    .w{
        width: 100%;
    }
}