/* CSS 初始化 */
html, body, div, span, object, iframe,h1, h2, 
h3, h4, h5, h6, p, blockquote, pre,abbr, address, cite, code,del, dfn, 
em, img, ins,kbd, q, samp,small, strong, sub, sup, var,b, i,dl, dt, dd, 
ol, ul, li,fieldset, form, label, legend,table, caption, tbody, 
tfoot,thead,tr, th, td,article, aside, canvas, details, figcaption, 
figure, footer, header, hgroup, menu, nav, section, summary,time, mark, 
audio, video {
    margin:0;
    padding:0; 
}
body {
    line-height:1;
    font-family: "Microsoft YaHei","微软雅黑", Arial, Helvetica, sans-serif;
}
a{
    margin:0;
    padding:0;
    border:0;
    font-size:100%;
    vertical-align:baseline;
    background:transparent;  
}
a:hover,a:focus{
    text-decoration:none;
    outline-style:none;/*FF*/ 
    }
table {
    border-collapse:collapse;
    border-spacing:0;
}
input, select {
    vertical-align:middle;
}

/*css为clearfix，清除浮动*/
.clearfix::before,
.clearfix::after{
    content: "";
    height: 0;
    line-height: 0;
    display: block;
    visibility: hidden;
    clear: both;
}
.clearfix:after{clear:both;} 
.clearfix{ 
    *zoom:1;/*IE/7/6*/
}
/* ============================================================
    flex：定义布局为盒模型
    flex-v：盒模型垂直布局
    flex-1：子元素占据剩余的空间
    flex-align-center：子元素垂直居中
    flex-pack-center：子元素水平居中
    flex-pack-justify：子元素两端对齐
============================================================ */

.flex{display: -webkit-box;
    display: -moz-box;
    display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
}
.flex-v{-webkit-box-orient:vertical;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;}
.flex-1{-webkit-box-flex:1;-webkit-flex:1;-ms-flex:1;flex:1;}
.flex-align-center{-webkit-box-align:center;-webkit-align-items:center;-ms-flex-align:center;align-items:center;}
.flex-pack-center{-webkit-box-pack:center;-webkit-justify-content:center;-ms-flex-pack:center;justify-content:center;}
.flex-pack-justify{-webkit-box-pack:justify;-webkit-justify-content:space-between;-ms-flex-pack:justify;justify-content:space-between;}