/*重置*/
*{
	margin:0;
	padding:0;
	font-family:"微软雅黑";
	outline:none;
 /* -webkit-filter: grayscale(1);
  filter: gray;
  filter: grayscale(1);*/
}
img { border:none;max-width:100%;vertical-align:top;}
li{ list-style:none;}
a{text-decoration:none;display:block;outline:none;color:#555;}
select::-ms-expand {display: none;}
select {
    border:none;
    background:none;
    /*很关键：将默认的select选择框样式清除*/
    appearance:none;
    -moz-appearance:none;
    -webkit-appearance:none;
}
input[type=text]{display:inline-block;vertical-align:top;}
input,textarea{border:none;background:none;}
input:focus,textarea:focus,select:focus{outline:none;}
input[type=text],textarea{
    -moz-border-radius: 0; /* Firefox */
    -webkit-border-radius: 0; /* Safari 和 Chrome */
    border-radius: 0; /* Opera 10.5+, 以及使用了IE-CSS3的IE浏览器 */}
input[type=button], input[type=submit], input[type=file], button {
    cursor: pointer;
    -webkit-appearance: none;
}

.clear:after{clear:both; content:'.';display:block;width:0;height:0;visibility:hidden;}
.clear{zoom:1;}

.radius{
    -moz-border-radius: 50%; /* Firefox */
    -webkit-border-radius: 50%; /* Safari 和 Chrome */
    border-radius: 50%; /* Opera 10.5+, 以及使用了IE-CSS3的IE浏览器 */}


.shadow{
    -moz-box-shadow: 10px 10px 20px #000; /* Firefox */
    -webkit-box-shadow: 10px 10px 20px #000; /* Safari 和 Chrome */
    box-shadow: 10px 10px 20px #000; /* Opera 10.5+, 以及使用了IE-CSS3的IE浏览器 */}

.shadow li:hover{
    -webkit-box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    box-shadow: 0 15px 30px rgba(0,0,0,0.1);
    -webkit-transform: translate3d(0, -2px, 0);
    transform: translate3d(0, -2px, 0)
}

.tran{
    transition: all 1s;
    -moz-transition: all 1s; 
    -webkit-transition: all 1s; 
    -o-transition: all 1s; }

.cen{position: absolute;
  top: 50%;
  left: 50%;
  transform:translate(-50%,-50%);
  -ms-transform: translate(-50%,-50%);
  -moz-transform: translate(-50%,-50%);
  -webkit-transform: translate(-50%,-50%);
  -o-transform: translate(-50%,-50%);
}

/*透明度*/
.opa{opacity:0.8;filter:alpha(opacity=80);}