.b_page{

    width: 960px;

    margin: 0 auto;

}

.b:before,.b:after{content:'\0020';display:block;overflow:hidden;visibility:hidden;width:0;height:0}

.b:after{clear:both}

.b{zoom:1; margin: 0 auto; width: 960px; position: relative;vertical-align: middle;}

.b > div{

    margin: 0 10px;

    float: left;

}

.b.full > div{

    margin: 0 !important;

}

.b.c_1 > div{

    width: 940px;  

}

.b.c_2 > div{

    width: 980px; 

}

.b.c_2_l > div:first-child{

    width: 620px;

}

.b.c_2_l > div{

    width: 300px;

}

.b.c_2_r > div:first-child{

    width: 300px;

}

.b.c_2_r > div{

    width: 620px;

}

.b.c_3 > div{

    width: 300px;

}

.b.c_3_l > div:first-child{

    width: 700px;

}

.b.c_3_l > div{

    width: 220px;

}

.b.c_3_r > div:first-child{

    width: 220px;

}

.b.c_3_r > div{

    width: 700px;

}

.b.c_4 > div{

    width: 220px;

}

.b.c_1.full > div{

    width: 960px;

}

.b.c_2.full > div{

    width: 480px;

}

.b.c_2_l.full > div:first-child{

    width: 560px;

}

.b.c_2_l.full > div{

    width: 400px;

}

.b.c_2_r.full > div:first-child{

    width: 400px;

}

.b.c_2_r.full > div{

    width: 560px;

}

.b.c_3.full > div{

    width: 320px;

}

.b.c_3_l.full > div:first-child{

    width: 720px;

}

.b.c_3_l.full > div{

    width: 240px;

}

.b.c_3_r.full > div:first-child{

    width: 240px;

}

.b.c_3_r.full > div{

    width: 720px;

}

.b.c_4.full > div{

    width: 240px;

}