blockquote,body,button,code,dd,div,dl,dt,fieldset,form,h1,h2,h3,h4,h5,h6,input,legend,li,ol,p,pre,td,textarea,th,ul{margin:0;padding:0}body{background:#fff;color:#555;font-size:14px;font-family:Arial,"Microsoft YaHei","黑体","宋体",sans-serif}caption,td,th{font-size:14px}h1,h2,h3,h4,h5,h6{font-weight:400;font-size:100%}address,caption,cite,code,dfn,em,strong,th,var{font-style:normal;font-weight:400}a{color:#555;text-decoration:none}a:hover{text-decoration:underline}img{border:none}li,ol,ul{list-style:none}button,input,select,textarea{font:14px Arial,"Microsoft YaHei","黑体","宋体",sans-serif}table{border-collapse:collapse}html{overflow-y:scroll}.clearfix:after{content:".";display:block;height:0;clear:both;visibility:hidden}.fl{float:left}.fr{float:right}.al{text-align:left}.ac{text-align:center}.ar{text-align:right}.hide{display:none}