/*
	输入 mr 后按下 tab键 完成以下代码
*/
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, dd, dl, dt, li, ol, ul, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td {
	margin:0;padding:0;
}

/*
	输入 mr 后按下 tab键 完成以下代码
*/
.ma {
	margin:;
	margin:auto;
	margin-top:;
	margin-left:;
	margin-bottom:;
	margin-right:;
}

/*
	其他语法大家自己尝试
*/
