body, h1, h2, h3, h4, h5, h6, hr, blockquote, dl, dt, dd, ul, ol, li, pre, fieldset, lengend, button, input, textarea, form, th { margin: 0; padding: 0;  }
p { margin:0; padding:0; }
fieldset, img { border: 0; }
body, button, input, select, textarea { font: 14px/1 ''; /*字体14px，行高为1倍*/ }
.f_l { float:left; }
.f_r { float:right; }
address, cite, dfn, em, var { font-style: normal; }
code, kbd, pre, samp, tt {}
small { font-size: 12px; }
/*在IE6,7下,当UL不具有float:left;display:inline;时:无论有没有list-style:none这个属性,列表符都被隐藏,不占位置
当UL具有float:left;display:inline;属性时list-style:none,列表符被隐藏,但是仍然留有位置(list-style-position:inside);
未设置list-style:none;列表符被隐藏,也不占位(list-style-position:outside)*/
ul, ol { list-style: none outside none; }/*•list-style-type •list-style-position  •list-style-image*/
a { text-decoration: none; color:#000; vertical-align:middle;/* 防止IE6焦点框扩大 */ }
a:hover { text-decoration: none; color: #999; }
abbr[title], acronym[title] { border-bottom: 1px dotted; cursor: help; }
q:before, q:after { content: ''; }
legend { color: black; }
button, input, select, textarea { font-size: 100%; outline:none }
table { border-collapse: collapse; border-spacing: 0; }
hr { border: none; height: 1px; }
html { overflow-y: scroll; }
.clearfix:after { content: " "; display: block; height: 0; clear:both; visibility: hidden; }
*html .clearfix { height:1%; }
.clear { clear:both; }
* { -webkit-box-sizing: border-box; -moz-box-sizing: border-box; box-sizing: border-box; }
.justify-content { height:100%; width:100%; margin:0; padding:0; display: -webkit-box; display: -ms-flexbox; display: -webkit-flex; display: flex; -webkit-box-pack: center; -ms-flex-pack: center; -webkit-justify-content: center; justify-content: center; -webkit-box-align: center; -ms-flex-align: center; -webkit-align-items: center; align-items: center }
.border-radius-50 { -webkit-border-radius: 50%; border-radius: 50%; -moz-border-radius: 50%; }
.box-shadow { -moz-box-shadow:2px 2px 5px #333; -webkit-box-shadow:2px 2px 5px #333; box-shadow:2px 2px 5px #333; }
.ellipsis { overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }