*{margin:0px;padding:0px;}/*内外边距初始化*/html, body, div, h1, h2, h3, h4, h5, h6, p, span, img, input, textarea, ul, ol, li, hr { margin: 0;padding: 0;}/*去除 list 默认样式*/ul, ol {list-style-type: none;}/*去除 a 标签默认样式*/a {text-decoration: none;}/*左右浮动*/.fl {f…