body,div,dl,dt,dd,ul,ol,li,h1,h2,h3,h4,h5,h6,pre,code,form,textarea,select,optgroup,option,fieldset,legend,p,blockquote,th,td {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0)
}

body {
    font: 14px/1.5 "微软雅黑", Heivetica, Tahoma, Arial, sans-serif;
}

.left {
    float: left;
}

.right {
    float: right;
}

.clear {
    clear: both;
}

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

.w_1200 {
    max-width: 1230px;
    margin: 0 auto;
    padding: 0 15px;
}