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V2EX  ›  CSS

请教一个 CSS 布局效果不显示问题

  •  
  •   zeroday · 2015-05-19 12:03:49 +08:00 · 3669 次点击
    这是一个创建于 3476 天前的主题,其中的信息可能已经有所发展或是发生改变。

    在线教程学习 CSS 布局。

    对于头部容器中图片的控制使用 .main-header_avatar 是如上图的效果,后替换为 .main-header imd 后布局显示出下图效果。

    .main-header_avatar 无法对头部容器中的图片进行控制吗?

    我的代码如下
    ```
    body {
    background-image: url(http://uploads.striking.ly/page/images/backgrounds/bg5.jpg);
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
    }

    .container {
    width: 960;
    margin: 0 auto;
    }

    .main-header {
    background-image: url(../img/banner.jpg);
    text-align: center;
    }

    .main-header img {
    /.main-header_avatar {/
    display: block;
    box-shadow: 0 0px 2px 1px rgba(0, 0, 0, 0.2);
    border-radius: 999px;
    margin: 0 auto;
    }

    .main-header h1 {
    font-weight:300;
    font-size: 50px;
    font-family: 'Open Sans','helvetica',arial,sans-serif;
    text-shadow: 0 1px rgba(0,0,0,0.3);
    }
    ```

    我的HTML
    ```
    <!--
    HTML5. Use tags like <article>, <section>, etc.
    See: http://www.sitepoint.com/web-foundations/doctypes/
    -->
    <html lang="en">
    <head>
    <meta charset="utf-8">
    <!--
    Ask IE to behave like a modern browser
    See: https://www.modern.ie/en-us/performance/how-to-use-x-ua-compatible
    -->
    <meta http-equiv="x-ua-compatible" content="ie=edge">

    <title>Profile</title>
    
    <!--
    Disables zooming on mobile devices.
    -->
    <meta name="viewport" content="width=device-width,initial-scale=1">
    
    <!--
    Stylesheet that minimizes browser differences.
    See: http://necolas.github.io/normalize.css/
    -->
    <link rel="stylesheet" href="css/normalize.css">
    
    <!--
    Our own stylesheet.
    -->
    <link rel="stylesheet" href="css/main.css">
    

    </head>
    <body>

    <div class="container">
      <header class="main-header">
        <img class="main-header__avatar" src="img/teng.jpg" alt="">
        <h1>Hi, I'm Teng Bao</h1>
      </header>
    
      <nav class="main-nav">
        <ul>
          <li><a href="#">Work</a></li>
          <li><a href="#">Experience</a></li>
          <li><a href="#">Photos</a></li>
          <li><a href="#">Contact</a></li>
        </ul>
      </nav>
    
      <section class="info-section whatido">
        <header>
          <h2>What I Do</h2>
          <p class="info-section__description">I'm Teng. I design and develop things on the web. Oh, and I like curry.</p>
        </header>
        <ul class="whatido__skill-list">
          <li class="whatido__skill whatido__skill--code">
            <h3>Code</h3>
            <p>I like building things on the web. I've built games, tools, and web apps.</p>
          </li>
          <li class="whatido__skill whatido__skill--design">
            <h3>Design / UX</h3>
            <p>I like creating happiness by making things look good and work well.</p>
          </li>
          <li class="whatido__skill whatido__skill--product">
            <h3>Product</h3>
            <p>I like taking products from idea to reality to users and beyond!</p>
          </li>
        </ul>
      </section>
    
      <section class="info-section education-experience">
        <header>
          <h2>Education &amp; Experience</h2>
        </header>
        <ul class="education-experience__list">
          <li>
            <img src="img/strikingly-logo.png" alt="Strikingly">
            <h3>Strikingly</h3>
            <p class="education-experience__title">Cofounder, 2012 - Present</p>
            <p class="education-experience__description">Strikingly is a website builder that's simple, beautiful, and fun. And perfect for the age of mobile. I'm in charge of UI/UX and front-end.</p>
          </li>
          <li>
            <img src="img/echo-rocket.jpg" alt="Echo Rocket">
            <h3>Freelance Web/Game Developer</h3>
            <p class="education-experience__title">2007 - 2012</p>
            <p class="education-experience__description">EchoRocket was my one-man Flash game studio and web development/design consultancy. I built Spinblaster, Block Knocker, CampusAmp, HireBrite, and more!</p>
          </li>
          <li>
            <img src="img/u-of-chicago.jpg" alt="">
            <h3>University of Chicago</h3>
            <p class="education-experience__title">BA Economics, 2008-2012</p>
            <p class="education-experience__description">Studying the finer points of firms, markets, finance, decision theory, and supply and demand.</p>
          </li>
        </ul>
      </section>
    
      <section class="info-section photos">
        <header>
          <h2>Photos</h2>
          <p class="info-section__description">Some pics from my travels!</p>
        </header>
        <ul class="photos__list">
          <li>
            <img src="img/p01.jpg" alt="">
          </li>
          <li>
            <img src="img/p02.jpg" alt="">
          </li>
          <li>
            <img src="img/p03.jpg" alt="">
          </li>
          <li>
            <img src="img/p04.jpg" alt="">
          </li>
          <li>
            <img src="img/p05.jpg" alt="">
          </li>
          <li>
            <img src="img/p06.jpg" alt="">
          </li>
          <li>
            <img src="img/p07.jpg" alt="">
          </li>
          <li>
            <img src="img/p08.jpg" alt="">
          </li>
        </ul>
      </section>
    
      <section class="info-section get-in-touch">
        <header>
          <h2>Get in Touch</h2>
        </header>
        <ul class="get-in-touch__list">
          <li>
            <a href="#"><img src="img/fb-icon.png" alt=""></a>
            <p>Facebook</p>
          </li>
          <li>
            <img src="img/twitter-icon.png" alt="">
            <p>Twitter</p>
          </li>
          <li>
            <img src="img/linkedin-icon.png" alt="">
            <p>Twitter</p>
          </li>
          <li>
            <img src="img/email-icon.png" alt="">
            <p>Twitter</p>
          </li>
        </ul>
      </section>
    
      <section class="info-section contact">
        <header>
          <h2>Or...Leave a Message</h2>
        </header>
        <form action="">
          <label for="name">Name</label>
          <input name="name" id="name" type="text">
          <label for="email">Email</label>
          <input name="email" id="email" type="email">
          <label for="message">Message</label>
          <textarea name="message" id="message"></textarea>
          <button type="submit">Submit</button>
        </form>
      </section>
    
    </div>
    

    <link href='http://fonts.googleapis.com/css?family=Open+Sans:300italic,300,400' rel='stylesheet' type='text/css'>
    </body>
    </html>
    ```

    我的 github rep: https://github.com/henry-zhuang/css0to1-startkit

    11 条回复    2015-05-20 20:21:12 +08:00
    yangg
        1
    yangg  
       2015-05-19 12:05:47 +08:00 via iPhone
    先codepen上demo吧!
    zeroday
        2
    zeroday  
    OP
       2015-05-19 12:15:44 +08:00
    gongpeione
        3
    gongpeione  
       2015-05-19 12:22:00 +08:00   ❤️ 1
    你的html里avatar前面有两个下划线。。
    Gonster
        4
    Gonster  
       2015-05-19 12:44:20 +08:00
    @gongpeione 好眼力 (`・ω・´)
    zeroday
        5
    zeroday  
    OP
       2015-05-19 13:34:51 +08:00
    @gongpeione 非常感谢,因为这个郁闷了好久。

    编辑器用窄宽体字,下划线分不清。

    loading
        6
    loading  
       2015-05-19 13:49:16 +08:00 via Android
    我一下就看出来了…

    你这命名也太胡乱了吧!
    gongpeione
        7
    gongpeione  
       2015-05-19 14:29:23 +08:00
    @Gonster 还好还好 (`・ω・´)

    @zeroday 不用谢~
    zeroday
        8
    zeroday  
    OP
       2015-05-19 17:42:24 +08:00
    @loading 好眼力!刚刚学前端,这个 HTML 文件是教程提供的,算教程的一个作业,更具提供的 HTML 增加 CSS 样式现实要求的效果。
    kokdemo
        9
    kokdemo  
       2015-05-19 17:44:46 +08:00
    背景和前景都是图片……
    loading
        10
    loading  
       2015-05-19 19:01:12 +08:00 via Android
    @zeroday 驼峰命名我比较喜欢
    zeroday
        11
    zeroday  
    OP
       2015-05-20 20:21:12 +08:00
    @loading
    问了教程的作者了。作者回答说是 BEM 的 CSS 风格

    http://csswizardry.com/2013/01/mindbemding-getting-your-head-round-bem-syntax/
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