/* - - - - - - - - - 各浏览器样式默认值标准化 - - - - - - - - -*/
html,body,span,object,iframe,h1,h2,h3,h4,h5,p,blockquote,pre,
a,address,code,
del,em,img,dl,dt,dd,ol,ul,li,
fieldset,form,label{margin:0;padding:0;border:0;font-style:inherit;font-family:inherit;vertical-align:baseline;}
article,aside,details,figcaption,figure,footer,header,hgroup,menu,nav,section,summary,audio,video{margin:0;padding:0;display: block;}
html{-webkit-text-size-adjust:none;}
img{border:none;vertical-align:middle;}
input,select,button{padding:0;margin:0;outline:none;font-family:inherit;vertical-align:middle;}
textarea{font-family:inherit;padding:0;margin:0;}
button{cursor:pointer;}
html{overflow-x:hidden;}
body{font-size:12px;background:#000 ;;font-family:'Microsoft YaHei';}
ul,ol{list-style-type:none;}
h1{font-size:24px;}
h2{font-size:18px;}
h3,h4{font-size:14px;}
h5{font-size:12px;}
i,em,address{font-style:normal;}
a{text-decoration:none;color:#4f4f4f;}
a:hover{text-decoration:underline;transition:color 200ms linear 0s,background-color 200ms linear 0s,border-color 200ms linear 0s;}
/*鼠标悬停时*/
a:active{}
/*点击与释放时*/
a:visited{}
/* 访问过*//* - - - - - - - - - 常用类样式 - - - - - - - - -*/
.photo_fullsize img{display:block;width:100%;height:100%;}
/*图片全尺寸*/
.no_bor{border:none!important;}
/*无边框*/
.no_bg{background:none!important;}
/*无背景*/
.clear{display:block;height:0;line-height:0;overflow:hidden;clear:both;font-size:0;}
/*清除浮动*/
.clear_::after{content:"";display:block;clear:both;height:0;line-height:0;overflow:hidden;}
/*清除浮动*/
.center{margin:0 auto;width:1280px;}
.center5{margin:0 auto;width:1292px;}	/*让内容区块居中*/
/*让内容区块居中*//*图片全尺寸*/
.photo,.photo_fullsize{display:block;overflow:hidden;}
.photo img,.photo_fullsize img{display:block;width:100%;height:100%;}
/*图片自适应尺寸*/
.photo_autosize{text-align:center;display:block;overflow:hidden;}
.photo_autosize::after{height:100%;width:0;overflow:hidden;font-size:0;line-height:0;display:inline-block;vertical-align:middle;content:"";}
.photo_autosize img{max-width:100%;max-height:100%;}
/*图片自适应全尺寸*/
.photo_autofullsize{overflow:hidden;display:block;background-size:cover!important}
.photo_autofullsize img{display:none;}
#backtop{display:none;background:url(../images/arrow_top.png) no-repeat left top;cursor:pointer;height:50px;width:50px;position:fixed;_position:absolute;bottom:50px;_top:expression(eval(document.documentElement.scrollTop document.documentElement.clientHeight-this.offsetHeight-(parseInt(this.currentStyle.marginTop,10)||0)-(parseInt(this.currentStyle.marginBottom,10)||0)));_bottom:auto;z-index:11500;right:75px;}
#backtop:hover{background-position:left bottom;}