我的 Susy 布局出现奇怪的错位答案

【问题标题】：Weird misalignment in my Susy layout我的 Susy 布局出现奇怪的错位
【发布时间】：2013-05-15 00:13:01
【问题描述】：

我将 Susy span-column() mixin 设置为的元素，不要服从它。它们错位得非常轻微。如何实现 HTML 元素的完美对齐？

整个网站错位的屏幕截图

细节：<header>和<nav>错位

详细信息：<section class="main">错位

这是我的 Sass 代码

@import compass
@import susy
@import normalize


/* Susy Settings */


$total-columns  : 5             
$column-width   : 4em            
$gutter-width   : 1em            
$grid-padding   : $gutter-width  

$desktop : 12

/* Susy-grid-background override to draw out horizontal lines */

=susy-grid-background       
  +grid-background($total-columns, $column-width, $gutter-width, $base-line-height, $gutter-width, $force-fluid: true)


$base-font-size: 18px
$base-line-height: 30px
+establish-baseline

ul
  background-color: rgba(1, 0, 50, 0.1)

li
  background: rgba(200,50,0,.2)
  text-align: right

a
  background: rgba(0,220,0,.2)
  display: block

h1
  +adjust-font-size-to(90px)
  +adjust-leading-to(4, 90px)
  +leader(2, 90px)
  background: rgba(0,20,200,.3)


h1#logo
  +adjust-font-size-to(30px)
  +adjust-leading-to(2, 30px)
  +leader(0, 30px)

h2
  +adjust-font-size-to(25px)
  +adjust-leading-to(1, 25px)
  background: rgba(250,250,0,.2)


p
  +leader(1)
  +trailer(1)
  background: rgba(0,220,0,.2)


.page, header, .pagenav, .main, .pagefoot
  +transition(all .3s ease)

.page                                
  +container($total-columns, $desktop)
  +susy-grid-background



/* BREAKPOINTS */

+at-breakpoint($desktop)
  .page
    +susy-grid-background
  header
    float: left
    +span-columns(2)
    background: rgba(250,0,0,.2)


    h1#logo a
      +hide-text
      float: right
      +span-columns(2, 2)
      background: rgba(200,10,250,.1)

    .pagenav
      clear: both
      +span-columns(2, 2)
      background: rgba(0,140,250,.3)

  .main
    +span-columns(10 omega,12)
    background: rgba(0,240,200,.3)

  .pagefoot
    background: rgba(45,0,120,.3)
    +span-columns(12,12)

还有我的 HTML

<!DOCTYPE html>
<html>                      
<head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8">
  <link href="stylesheets/style.css" media="screen, projection" rel="stylesheet" type="text/css" />

  <title>Home</title>

</head>

<body>
  <div class="page">
    <header>
      <h1 id="logo">
        <a href="">
            "Designer Name"
        </a>
      </h1>
      <nav class="pagenav" role="navigation">
        <ul>
          <li>
            <a href="">
              <h2>
                work
              </h2>
            </a>
          </li>
          <li>
            <a href="">
              <h2>
                blog
              </h2>
            </a>
          </li>
          <li>
            <a href="">
              <h2>
                about
              </h2>
            </a>
          </li>
          <li>
            <a href="">
              <h2>
                contact
              </h2>
            </a>
          </li>
        </ul>
      </nav>
    </header>
    <section class="main">
      <h1 id="heading">
        Main Title
      </h1>
      <p>
        smappppin conta naoiw nasdhi aaushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdaushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdaushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdaushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdaushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdaushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdaushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdaushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdushd kajsdiuashdu ahsdo ahosdijaosidj oaisjd ojofjidfj odijf odjf odijfodjfo dijfo djfo jdofijdoifj odhfi dhsjkenbrou snfco784ijrh8heuhfs kdjf ksdpppf
      </p>
      <h2>A New Title</h2>
      <p>
        Vertical grids are a compas feature. See the compass docs for baseline grid background. You won't be able to show both grids at once on the same element without a bit more work. Maybe we should integrate that somehow in Susy 2.0? Vertical grids are a compas feature. See the compass docs for baseline grid background. You won't be able to show both grids at once on the same element without a bit more work. Maybe we should integrate that somehow in Susy 2.0?
      </p>
      <p>AJASd nasdi oasd iabjds iausbd kasbd oiausbdi absdiuabsidb aisudb iasbd iabsdi basid baisdb jhavsdjh agvsdk abs klda;is d'asijd AOSDU IASD IAsid hyi/aisD haH siD HAISHd IAhdA sid aSIHD aihsf ihgiuyerhf 9f3kuhsdffdsfsd
      </p>
    </section>
    <footer class="pagefoot">
      <p>Made by</p>
    </footer>
  </div>
</body>
</html>

【问题讨论】：

标签： sass compass-sass susy-compass

【解决方案1】：

Susy 网格（默认情况下）内部是流动的。所有流体网格在浏览器端都会受到一定数量的sub-pixel rounding 的影响。也就是说，您主要看到的是背景网格上的亚像素舍入，这通常比实际的元素舍入更差。那是noted in the docs - 网格背景是一个粗略的指南，而不是像素精确的标尺。

Susy 还有isolation 选项，可用于阻止来自compounding 的亚像素错误。

【讨论】：