<p>将鼠标移至链接上查看其样式改变.</p> <p><a class="ex1" href="/css/">This link changes color</a></p> <p><a class="ex2" href="/css/">This link changes font-size</a></p> <p><a class="ex3" href="/css/">This link changes background-color</a></p> <p><a class="ex4" href="/css/">This link changes font-family</a></p> <p><a class="ex5" href="/css/">This link changes text-decoration</a></p>