*{ margin:0; padding:0; font-family:"微软雅黑"; color:#333333;}
dd{ margin:0; padding:0;}
body,html{ height:100%;}

li{ list-style:none;}
img{ display:inline;}

ul,ol{list-style:none outside none;}

fieldset,img{border:0;} 
button,input,select,textarea {font-size:100%;} 


img,input,select,textarea,button{vertical-align:middle; margin: 0;}
input::-webkit-input-placeholder{color:#b2b2b2;}

a:link,a:visited{ text-decoration:none;}
a{ display:block;  cursor:pointer;}

button{cursor:pointer;}


/** 浮动 **/
.fl{float:left;}
.fr{float:right;}

/** 清除浮动 **/
.clear{clear:both;}


/** 宽度1200px 居中效果 **/
.section{ margin:0 auto; width:1200px;}

.mar_top50{ margin-top:50px;}
.mar_top30{ margin-top:30px;}
.mar_top20{ margin-top:20px;}
.mar_bt20{ margin-bottom:20px;}
.mar_bt30{ margin-bottom:30px;}
.mar_rt13{ margin-right:13px;}


.border_box{ border:1px solid #cccccc;}
.border_btn{ border-bottom:1px dashed #e0e0e0;}
.box{ border:1px solid red;}