css容器
.s1{ background-color:pink; font-weight:bold; font-size=16px; color:black; } #id1{ background-color:silver; font-size:40px; } body{ color:orange; } a:link{ color=black; text-decoration:none; font-size:24px; } a:hover{ text-decoration:underline; font-size:40px; color:green; } a:visited{ color:red; }