ul,li{margin: 0;display: inline-block;list-style: none;padding: 0}
img { border: 0; vertical-align: middle }
a { text-decoration: none;  outline: none  }
html,body{
    width: 100%;
    margin: 0;
    padding: 0;
    font-family:"Microsoft Yahei",微软雅黑,"Helvetica Neue",Arial,sans-serif;
}
.fixed-middle{
    width: 1000px;
    margin: 0 auto;
}

.float-left{
    float: left;
}