body
{
    margin: 0 auto;
    padding: 0 auto;
    width: 770px;
    font-size: 12px;
    color: #555555;
    font-family: Arial;
}
.clear
{
    clear: both;
}
.left
{
    float: left;
}
.right
{
    float: right;
}

a
{
    color: #1773BE;
    text-decoration: none;
}
a:link
{
    color: #1773BE;
}
a:visit
{
    color: #FF0000;
}
a:hover
{
    color: #F90;
}
a img
{
    border: 0px;
}

.content
{
    margin: 10px 0 10px 0;
}


/*ÔÚÏßѧϰ*/

.study_site
{
    border: 1px solid #AAC5DF;
    background-color: #E1EDF9;
    color: #255694;
    padding: 5px;
}
.study
{
    width: 765px;
    margin: 10px 0 10px 0;
    border: 1px solid #AAC5DF;
    background-color: #E1EDF8;
}
.study_content
{
    margin: 15px;
}
.study_tech
{
    float: left;
    width: 367px;
    background: url(../images/study_bg.gif);
}
.study_tech li
{
    list-style-type: none;
    margin: 10px 0 0 0;
}
.study_tech ul
{
    text-align: center;
    margin: 0px;
}