*,
::before,
::after{
    margin: 0;
    padding: 0;

    -webkit-tap-highlight-color: transparent;/*清除点击默认的高亮效果*/

    -webkit-box-sizing: border-box;/*以你的border开始计算你的宽度*/

}

body{
    font-size: 14px;
    font-family: 'sans-serif';/*第二个是手机的一个默认的字体*/
    color: #000;
}

a{
    text-decoration: none;
    color: #000;
}

ul{
    list-style: none;
}

input,textarea{
    border: none;
    resize: none;
    outline: none;/*清除选中效果*/

    -webkit-appearance: none;/*清楚浏览器默认的样式*/
}

/*清除浮动*/
.clearfix::before,
.clearfix::after{
    content: ".";
    display: block;
    height: 0;
    line-height: 0;
    visibility: hidden;
    clear: both;
}

html, body, div, span, applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
b, u, i, center,
dl, dt, dd, ol, ul, li,
fieldset, form, label, legend,
table, caption, tbody, tfoot, thead, tr, th, td,
button,article, aside, canvas, details, embed, figure,
figcaption, footer, header, hgroup, menu, nav,
output, ruby, section, summary, time, mark,
audio, video {
 	margin: 0;
	padding: 0;
	border: 0;
	vertical-align: baseline;
	background: transparent;
	outline: none;
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}
article, aside, details, figcaption, figure, footer, header, hgroup, menu, nav, section { display: block; }
ol, ul { list-style: none; }
button{background: transparent;}
blockquote, q { quotes: none; }
blockquote:before, blockquote:after, q:before, q:after { content: ''; content: none; }
strong { font-weight: bold; }
table { border-collapse: collapse; border-spacing: 0; }
img { border: 0; max-width: 100%; }