/* 重置样式 */
section, body, div, p, span, h1, h2, h3, h4, h5, h6, form, input, a, ul, li, dt, dd, dl, ol, header, nav, footer, textarea {margin: 0;padding: 0;}
a {text-decoration: none;}
li {list-style: none;}
input, textarea {border: none;outline: none;background-color: transparent;}