CSS格式化排版

Question

字体设置  body{font-family:"Microsoft Yahei";}粗体设置  p span{font-weight:bold;}斜体设置 p a{font-style:italic;}下划线设置 p a{text-decoration:underline;}删除线设置 .oldPrice{text-decoration:line-through;}双空格设置  p{text-indent:2em;}行间距设置 p{line-height:2em;}字间距、词间距设置 p{letter-spacing:20px;}  h1{word-spacing:20px;}居中、靠左、靠右设置p{text-align:center;}  left right