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0;width:1200px;position:relative}.jz_tab_nav_item{display:inline-block;color:#333;margin-left:70px;font-size:18px;line-height:34px;cursor:pointer}.tab_select_line{position:absolute;bottom:0;width:72px;height:2px;background-color:#2f82ff;transition:all .3s;left:0}.jz_tab_nav .first{margin-left:0}.jz_tab--current{color:#2f82ff}.tree_nav{text-align:center;width:1200px;position:relative;padding-top:38px}