响应式设计奇怪的行为

Question

有人可以看看这个吗 this codepen ?

不是我写的，但我无法理解这种响应行为...当我使用 codepen 或 F12 缩小屏幕大小时它可以工作，但是当我在移动设备上打开它时 phone 或在检查模式下打开它（800 像素以下的设备）它没有显示在单行中......有什么解决办法吗？

这是编写的响应代码

@media only screen and (max-width: 830px) {
    #conference-timeline .timeline-start,
    #conference-timeline .timeline-end {
        margin: 0;
    }
    #conference-timeline .conference-center-line {
        margin-left: 0;
        left: 50px;
    }
    .timeline-article .meta-date {
        margin-left: 0;
        left: 20px;
    }
    .timeline-article .content-left-container,
    .timeline-article .content-right-container {
        max-width: 100%;
        width: auto;
        float: none;
        margin-left: 110px;
        min-height: 53px;
    }
    .timeline-article .content-left-container {
        margin-bottom: 20px;
    }
    .timeline-article .content-left,
    .timeline-article .content-right {
        padding: 10px 25px;
        min-height: 65px;
    }
    .timeline-article .content-left:before {
        content: "\f0d9";
        right: auto;
        left: -8px;
    }
    .timeline-article .content-right:before {
        display: none;
    }
}

Answer 1

这是一个 codepen 问题。好吧，这不是真正的问题，但与它在编辑器模式下的工作方式有关。

在移动设备上，codepen 不支持媒体查询，因为它开始显示其桌面版本。我想这是为了让您仍然可以编辑 html、css 和 JavaScript。

但是，您切换到Full Page模式，您可以查看编辑设计的响应度：https://codepen.io/Ratko_Solaja/full/ztxkw/

此外，请注意两件事：

添加元视口标签

<meta name="viewport" content="width=device-width, initial-scale=1">

添加CSS重置，在本例中归一化

<link href="https://cdnjs.cloudflare.com/ajax/libs/normalize/8.0.0/normalize.css" rel="stylesheet">

为什么响应性有效？

因为 .content-left-container 和 .content-right-container 它在媒体查询上添加了 float:none。

这是有效的代码：

     body {
  background: #e6e6e6;
  font-family: "Roboto", sans-serif;
  font-weight: 400;
}

/*===== Vertical Timeline =====*/
#conference-timeline {
  position: relative;
  max-width: 920px;
  width: 100%;
  margin: 0 auto;
}
#conference-timeline .timeline-start,
#conference-timeline .timeline-end {
  display: table;
  font-family: "Roboto", sans-serif;
  font-size: 18px;
  font-weight: 900;
  text-transform: uppercase;
  background: #00b0bd;
  padding: 15px 23px;
  color: #fff;
  max-width: 5%;
  width: 100%;
  text-align: center;
  margin: 0 auto;
}
#conference-timeline .conference-center-line {
  position: absolute;
  width: 3px;
  height: 100%;
  top: 0;
  left: 50%;
  margin-left: -2px;
  background: #00b0bd;
  z-index: -1;
}
#conference-timeline .conference-timeline-content {
  padding-top: 67px;
  padding-bottom: 67px;
}
.timeline-article {
  width: 100%;
  height: 100%;
  position: relative;
  overflow: hidden;
  margin: 20px 0;
}
.timeline-article .content-left-container,
.timeline-article .content-right-container {
  max-width: 44%;
  width: 100%;
}
.timeline-article .timeline-author {
  display: block;
  font-weight: 400;
  font-size: 14px;
  line-height: 24px;
  color: #242424;
  text-align: right;
}
.timeline-article .content-left,
.timeline-article .content-right {
  position: relative;
  width: auto;
  border: 1px solid #ddd;
  background-color: #fff;
  box-shadow: 0 1px 3px rgba(0,0,0,.03);
  padding: 27px 25px;
}
.timeline-article p {
  margin: 0 0 0 60px;
  padding: 0;
  font-weight: 400;
  color: #242424;
  font-size: 14px;
  line-height: 24px;
  position: relative;
}
.timeline-article p span.article-number {
  position: absolute;
  font-weight: 300;
  font-size: 44px;
  top: 10px;
  left: -60px;
  color: #00b0bd;
}
.timeline-article .content-left-container {
  float: left;
}
.timeline-article .content-right-container {
  float: right;
}
.timeline-article .content-left:before,
.timeline-article .content-right:before{
  position: absolute;
  top: 20px;
  font-size: 23px;
  font-family: "FontAwesome";
  color: #fff;
}
.timeline-article .content-left:before {
  content: "\f0da";
  right: -8px;
}
.timeline-article .content-right:before {
  content: "\f0d9";
  left: -8px;
}
.timeline-article .meta-date {
  position: absolute;
  top: 0;
  left: 50%;
  width: 62px;
  height: 62px;
  margin-left: -31px;
  color: #fff;
  border-radius: 100%;
  background: #00b0bd;
}
.timeline-article .meta-date .date,
.timeline-article .meta-date .month {
  display: block;
  text-align: center;
  font-weight: 900;
}
.timeline-article .meta-date .date {
  font-size: 30px;
  line-height: 40px;
}
.timeline-article .meta-date .month {
  font-size: 18px;
  line-height: 10px;
}
/*===== // Vertical Timeline =====*/

/*===== Resonsive Vertical Timeline =====*/
@media only screen and (max-width: 830px) {
  #conference-timeline .timeline-start,
  #conference-timeline .timeline-end {
    margin: 0;
  }
  #conference-timeline .conference-center-line {
    margin-left: 0;
    left: 50px;
  }
  .timeline-article .meta-date {
    margin-left: 0;
    left: 20px;
  }
  .timeline-article .content-left-container,
  .timeline-article .content-right-container {
    max-width: 100%;
    width: auto;
    float: none;
    margin-left: 110px;
    min-height: 53px;
  }
  .timeline-article .content-left-container {
    margin-bottom: 20px;
  }
  .timeline-article .content-left,
  .timeline-article .content-right {
    padding: 10px 25px;
    min-height: 65px;
  }
  .timeline-article .content-left:before {
    content: "\f0d9";
    right: auto;
    left: -8px;
  }
  .timeline-article .content-right:before {
    display: none;
  }
}
@media only screen and (max-width: 400px) {
  .timeline-article p {
    margin: 0;
  }
  .timeline-article p span.article-number {
    display: none;
  }
  
}
/*===== // Resonsive Vertical Timeline =====*/

<head>
  <meta charset="UTF-8" />
  <title>Responsive Vertical Timeline</title>
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdnjs.cloudflare.com/ajax/libs/normalize/8.0.0/normalize.css" rel="stylesheet">
  <!-- Fonts -->
  <link href='https://fonts.googleapis.com/css?family=Roboto:400,300,400italic,700,900' rel='stylesheet' type='text/css'>
  <link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/4.2.0/css/font-awesome.min.css" rel="stylesheet" type="text/css">
</head>
<body>
<section id="conference-timeline">
    <div class="timeline-start">Start</div>
    <div class="conference-center-line"></div>
    <div class="conference-timeline-content">
      <!-- Article -->
      <div class="timeline-article">
        <div class="content-left-container">
          <div class="content-left">
            <p>When I orbited the Earth in a spaceship, I saw for the first time how beautiful our planet is. Mankind, let us preserve and increase this beauty, and not destroy it! <span class="article-number">01</span></p>
          </div>
          <span class="timeline-author">John Doe</span>
        </div>
        <div class="content-right-container">
          <div class="content-right">
            <p>When I orbited the Earth in a spaceship, I saw for the first time how beautiful our planet is. <span class="article-number">02</span></p>
          </div>
          <span class="timeline-author">John Doe</span>
        </div>
        <div class="meta-date">
          <span class="date">18</span>
          <span class="month">APR</span>
        </div>
      </div>
      <!-- // Article -->
      
      <!-- Article -->
      <div class="timeline-article">
        <div class="content-left-container">
          <div class="content-left">
            <p>When I orbited the Earth in a spaceship, I saw for the first time how beautiful our planet is. Mankind, let us preserve and increase this beauty, and not destroy it! <span class="article-number">01</span></p>
          </div>
          <span class="timeline-author">John Doe</span>
        </div>
        <div class="content-right-container">
          <div class="content-right">
            <p>When I orbited the Earth in a spaceship, I saw for the first time how beautiful our planet is. <span class="article-number">02</span></p>
          </div>
          <span class="timeline-author">John Doe</span>
        </div>
        <div class="meta-date">
          <span class="date">18</span>
          <span class="month">APR</span>
        </div>
      </div>
      <!-- // Article -->
      
      <!-- Article -->
      <div class="timeline-article">
        <div class="content-left-container">
          <div class="content-left">
            <p>When I orbited the Earth in a spaceship, I saw for the first time how beautiful our planet is. Mankind, let us preserve and increase this beauty, and not destroy it! <span class="article-number">01</span></p>
          </div>
          <span class="timeline-author">John Doe</span>
        </div>
        <div class="content-right-container">
          <div class="content-right">
            <p>When I orbited the Earth in a spaceship, I saw for the first time how beautiful our planet is. <span class="article-number">02</span></p>
          </div>
          <span class="timeline-author">John Doe</span>
        </div>
        <div class="meta-date">
          <span class="date">18</span>
          <span class="month">APR</span>
        </div>
      </div>
      <!-- // Article -->
    </div>
    <div class="timeline-end">End</div>
  </section>
  <!-- // Vertical Timeline -->
</body>

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