在網格系統中使用空divs

Question

我使用的是1140網格系統，並且有一個基本問題：如果要使元素的寬度小於12列，是否需要將空div用作「間隔符」？

這裏是我期待實現樣機：

基本上，我想頁腳只是下方的主要區域，但在其自己的行。我能看到做到這一點的唯一方法是使用div作爲「spacer」將頁腳縮進到我想要的位置。這是如何完成的？

下面的代碼（你需要使預覽屏幕大，看這是怎麼回事）：http://jsfiddle.net/saltcod/87DZC/

<link rel="stylesheet" href="https://raw.github.com/robertcedwards/HTML-5-Boilerplate-1140-Grid/master/css/1140.css" type="text/css" media="screen" /> 

<div id="main"> 
<h1 class="site-title">Site Title</h1> 
    <div class="container"> 
     <div class="row"> 
      <div id="sidebar" class="threecol"> 
       <h4> Sidebar - Three cols</h4> 
       <ul> 
        <li> Item one</li> 
        <li> Item two</li> 
        <li> Item three</li> 
        <li> Item four</li> 
        <li> Item five</li> 
      </div> 
      <div id="primary" class="ninecol last"> 
       <h3>Nine columns</h3> 
       <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Suspendisse vel lectus non nisi pellentesque porta sed vel ante. Aliquam ut elit nulla, ac fermentum diam. Donec convallis dui in felis bibendum mollis. Quisque egestas purus libero, ac vehicula tortor. Sed tristique est sed libero pulvinar nec luctus metus vulputate. Etiam ac tempor nunc. Morbi sit amet neque lacus, ac lacinia nisl. Nullam imperdiet ornare sem, non viverra ipsum hendrerit id. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Cras vel leo nisl. Ut bibendum ornare urna eget lacinia.</p> 

       <p>Aliquam ante lectus, ornare a sollicitudin tincidunt, convallis a magna. Sed fermentum lacus id nisl vestibulum interdum. Ut mattis justo in mi vulputate porttitor. Proin sagittis, urna quis blandit semper, velit nisi aliquet dui, et placerat leo purus a erat. Donec congue, elit a eleifend facilisis, lectus sapien placerat augue, in feugiat ante purus sodales libero. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean eget lacus sed enim euismod faucibus. Pellentesque facilisis arcu sed leo gravida a ultricies nisi cursus. Quisque venenatis mollis ligula sed semper. Nullam ac sem purus, non tincidunt velit. In hendrerit, odio sit amet tempus pharetra, libero orci suscipit tellus, eu mollis augue dui a nulla. Vivamus dignissim elit sit amet est mollis sed aliquet lorem posuere. Nulla varius purus quis elit pellentesque et auctor nunc gravida. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Sed nibh erat, aliquet a luctus vel, pulvinar nec neque.</p> 

       <h2> If I want three blocks inside #primary, that's easy: </h2> 
       <div class="fourcol bottom">A</div> 
       <div class="fourcol bottom">B</div> 
       <div class="fourcol bottom last">C</div> 

     </div> <!-- [ .row ] --> 

     <footer class="row twelvecol"> 
      <h3> But if I want three blocks in my footer, I need to 'indent' it with an empty div?</h3> 
      <div class="threecol empty bottom"> [ empty div ]</div> 
      <div class="threecol bottom">A</div> 
      <div class="threecol bottom">B</div> 
      <div class="threecol bottom last">C</div> 
      <p> Isn't this a bit like using a spacer gif in a table layout? </p> 
     </footer> 
    </div> 
</div> 

Answer 1

這是不是有點像一個表格佈局使用間隔GIF ？

是的，基本上div會創建你想要的空間。在使用CSS網格框架時，通常使用具有相應列類的空白div來相應地分隔空間。當然你可以想出涉及相對定位等的替代解決方案，但爲什麼會使問題複雜化。最後一段代碼應該看起來像這樣。

<footer class="row twelvecol"> 
     <div class="threecol first"></div>   
     <div class="threecol bottom">A</div> 
     <div class="threecol bottom">B</div> 
     <div class="threecol bottom last">C</div> 
    </footer>