CSS 全局重置代码

• html, body, div, dl, dt, dd, ul, h1, h2, h3, pre, form, label, fieldset, input, p, blockquote, th, td { margin:0; padding:0; }
• table { border-collapse:collapse; border-spacing:0; }
• fieldset, img { border:0; }
• ul { list-style:none }