#main{ width:750px; float:right; position:relative;}
#main_content{ width:700px; float:left;}
.right_flash{ width:50px; height:1000px; float:right;right:0; position: relative;}
.back{ margin:0 20px 0 540px; height:30px; position:absolute; top:20px; width:200px;}
#running_word{ width:700px; height:20px; position:absolute; top:0;}

#title{ width:700px; height:40px; position:absolute; top:40px; background-image: url(../images/master_class/change_title.gif); background-position:top left; background-repeat:no-repeat;}
#title img{}


#first_article{ width:700px; margin-top:85px; margin-left:0;}
#article_1{ width:680px; margin-left:20px;}

#title2{width:700px; margin-top:1px; background-image: url(../images/master_class/title_2.gif); background-position:top left; background-repeat:no-repeat;}

#second_article{ width:700px; margin-top:294px; margin-left:0;}
#article_2{ width:680px; margin-top:40px; margin-left:20px;}
.article_p{ font-size:12px;  font-family:Arial, Helvetica, sans-serif; text-decoration:none; color:#FFF; line-height:22px; text-align:justify;}
.article_p2{ font-size:12px;  font-family:Arial, Helvetica, sans-serif; text-decoration:none; color:#08a0fb; line-height:21px; text-align:justify;}
#article2_2{ width:680px; margin-top:230px; left:0; background:url(../images/master_class/article2_2_content.jpg) no-repeat right top;}
#article2_2_content{ width:410px; float:left; padding-right:10px; margin-left:20px;}

#third_article{ width:700px; margin-top:881px; margin-left:0;}
#title3{width:680px; margin-top:0; background-image: url(../images/master_class/title_3.gif); background-position:top left; background-repeat:no-repeat;}
#article_3{ width:680px; margin-top:40px; margin-left:20px;}




/* ---------------------main end--------------------- */