如何删除正文周围的边距空间或清除默认的CSS样式

body

body { margin:0; } 

或者您可以使用此有用的全局重置

* { margin:0; padding:0; box-sizing:border-box; }

如果您想要的东西不那么

*

html, body, body div, span, object, iframe, h1, h2, h3, h4, h5, h6, p, blockquote, pre, abbr, address, cite, pre, del, dfn, em, img, ins, kbd, q, samp, small, strong, sub, sup, var, b, i, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td, article, aside, figure, footer, header, hgroup, menu, nav, section, time, mark, audio, video {    margin: 0;    padding: 0;    border: 0;    outline: 0;    font-size: 100%;    vertical-align: baseline;    background: transparent;}