*
{
    padding: 0;
    margin: 0;
}
.left
{
    float: left;
}
.right
{
    float: right;
}
a:link ,a:visited
{
    color: black;
    text-decoration: none;
}
a:hover
{
    color: orange;
}
a:active
{
    color: blue;
}
.top
{
    width: 1275px;
    height: 50px;
    line-height: 50px;
    font-size: 20px;
    margin: 0 auto;
}
.top_img
{
    height: 50px;
    padding-top:5px;
    padding-right: 10px;
}
.top_right
{
    font-size: 18px;
}
.center
{
    width: 1275px;
    height: 550px;
    margin: 0px auto;
    margin-top: 90px;
    position: relative;
}
.center_left
{
    width: 350px;
    height: 250px;
    margin: 100px 0 100px 100px;
    float: left;

}
.title
{
    font-size: 50px;
    margin-bottom: 15px;
}
.denglu
{
    width: 250px;
    height:40px;
    line-height:40px;
    margin: 40px 0;
    text-align: center;
    font-size: 20px;
    font-family: 宋体;
    font-weight: 900;
    background-color: rgb(249, 247, 245);
    border: 1px rgb(252, 251, 250) solid; 
}
.tupian
{
    float: left;
}
.bottom
{
    width: 1275px;
    height: 30px;
    line-height: 30px;
    margin: 0px auto;
    text-align: center;
}
span
{
    margin: 0 10px;
}