.clear {
    clear: both;
}

.main_body {
    width: 1000px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 8px;
    padding-right: 8px;    
}

.pre_main_body{
    width: 1000px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 8px;
    padding-right: 8px;

}
.post_main_body{
    width: 1000px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 8px;
    padding-right: 8px;
}

.post_main_body_footer{
    width: 1000px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 8px;
    padding-right: 8px;
}


.col {
    float: left;
}

.centre_col {
    width: 600px;
}

.right_col {
    position: relative;
    width: 370px;
    margin-left: 30px;
    top: 20px;

}