body,
html {
    /* margin: 0;
    padding: 0;
    font-family: "微软雅黑";
    background-color: #fff;
    font-size: 16px;
    font-weight: normal;
    color: #333;
    cursor: default;
    letter-spacing: 0px; */
}

* {
    margin: 0;
    padding: 0;
    border: 0;
    list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
ul,
li,
dl,
dt,
dd {
    margin: 0;
    padding: 0;
}

td {
    vertical-align: middle;
    box-sizing: border-box;
}

a {
    color: #333;
    text-decoration: none;
    outline: none;
}

a {
    font-weight: normal;
    display: inline-block;
    text-underline: none;
    text-decoration: none;
}

a:hover {
    color: #ed6d00;
}

img,
video {
    border: none;
    max-width: 100%;
}

.clear {
    clear: both;
}

.left {
    float: left;
}

.right {
    float: right;
}

.bg {
    background: url(https://www.csust.edu.cn/images/spxy_bg.jpg) no-repeat center bottom;
}

.w1300 {
    width: 1300px;
    margin: 0 auto;
}

.w50 {
    width: 650px;
}

.w900 {
    width: 900px;
    _height: 500px;
    min-height: 500px;
    padding-right: 30px;
}

.w300 {
    width: 300px;
}

.w350 {
    width: 350px;
}

.w420 {
    width: 420px;
}

.h420 {
    height: 420px;
}

.h260 {
    height: 260px;
}

.h300 {
    height: 300px;
}

.ml0 {
    margin: 0px;
}

.mt10 {
    margin-top: 10px;
}

.mt20 {
    margin-top: 20px;
}

.mt25 {
    margin-top: 25px;
}

.mt30 {
    margin-top: 30px;
}

.mt35 {
    margin-top: 35px;
}

.mt40 {
    margin-top: 40px;
}

.mt50 {
    margin-top: 50px;
}




@media screen and (max-width:800px) {
    .w1300 {
        width: auto;
        overflow: hidden;
    }
}

@media screen and (max-width:800px) {}