一些css优化

常用的属性整理，直接复用

/* 清除浮动 */
 .clearfix:after{content:""; display:block; visibility:hidden; height:0; clear:both;zoom:1;}

/* 图片自适应 */
        img {
            max-width: 100%;
            height: auto;
            width:auto\9; /* ie8 */
            -ms-interpolation-mode:bicubic;/*为了照顾ie图片缩放失真*/
        }

/* 初始化 */
        body,div,ul,li,ol,h1,h2,h3,h4,h5,h6,input,textarea,select,p,dl,dt,dd,a,img,button,form,table,th,tr,td,tbody,article,
        aside, details,figcaption,figure,footer,header,hgroup, menu,nav,section{margin:0; padding:0;}
        body{font-family: 'Helvetica Neue', 'Microsoft Yahei', sans-serif;}

/*都需要设置width*/
.text_fix_3 {
        overflow: hidden;
        text-overflow: ellipsis;
        display: -webkit-box;
        -webkit-line-clamp: 3;
        -webkit-box-orient: vertical
}

.text_fix_1 {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
}