<aside> The <code type="inline">. xf-value</code> selector used here styles the field value but not its label. This is actually inconsistent with the current css3 draft. The example really should use the code type="inline">:: va lue</code> pseudo-class instead like so <pre class="displaycode">input: value i width: 20em; J #ccnumber: value[ width: 18em J #state: value i width: 3em </pre> However, Firefox doesn t yet support this syntax 浏览器可以决定把这个边栏放在哪里(可能需要用一点儿CSS代码) figure figure元素代表一个块级图像,还可以包含说明。例如,在许多 developerWorks文章中,可以看到 清单5这样的标记:其结果见图1。 清单5.用HTML4编写的 developerWorks图 <a name="fig2><b>Figure 2. Install Mozilla XForms dialog</b></a><br <img alt="A web site is requesting permission to install the fo l lowing item ms 0. 7 Unsign src="installdialog jpg"border="0" height=""317 hspace=5 vspace="5"width="331 br<aside> <h3>.xf-value</h3> <p> The <code type="inline">.xf-value</code> selector used here styles the input field value but not its label. This is actually inconsistent with the current CSS3 draft. The example really should use the <code type="inline">::value</code> pseudo-class instead like so: </p> <pre class="displaycode">input::value { width: 20em; } #ccnumber::value { width: 18em } #zip::value { width: 12em } #state::value { width: 3em }</pre> <p> However, Firefox doesn't yet support this syntax. </p> </aside> 浏览器可以决定把这个边栏放在哪里（可能需要用一点儿 CSS 代码）。 figure figure 元素代表一个块级图像，还可以包含说明。例如，在许多 developerWorks 文章中，可以看到 清单 5 这样的标记；其结果见图 1。 清单 5. 用 HTML 4 编写的 developerWorks 图 <a name="fig2"><b>Figure 2. Install Mozilla XForms dialog</b></a><br /> <img alt="A Web site is requesting permission to install the following item: Mozilla XForms 0.7 Unsigned" src="installdialog.jpg" border="0" height="317" hspace="5" vspace="5" width="331" /> <br />