在 html 中填充文章元素

Question

我正在用一篇文章header划分一些我想展示的项目：

.project-elem {
  background-color: greenyellow;
  padding-top: 5rem;
  padding-bottom: 5rem;
  height: 300px;
}

.projects {
  margin: 0;
  padding: .7rem;
  background-color: #DDCDE8;
  font: Asap, sans-serif;
  height: 1000px;
}

.project-n {
  background-color: green;
  text-align: center;
  width: 60%;
  float: left;
  padding: 2.5rem;
}

.img {
  background-color: blue;
  text-align: center;
  padding: 3rem;
  margin-left: 40%;
}

<div class="projects" id=#projects>
  <h2>My Projects</h2>
  <article class="project-elem">
    <div class="project-n" id="dictocounter">
      <h3>Dictation Counter</h3>
      <p>info about proj</p>
      <img src="dictocounter1.jpg" alt="Dictocounter in Action">
    </div>
    <div class="img">
      <p>heres SOME IMAGE</p>
    </div>
  </article>
  <article class="project-elem">
    <div class="project-n" id="calc">
      <h3>RPN Calculator</h3>
      <p>info about proj</p>
      <img src="calc.jpg" alt="RPN Calculator Decoding Input">
    </div>
    <div class="img">
      <p>heres SOME IMAGE</p>
    </div>
  </article>
  <article class="project-elem">
    <div class="project-n" id="markov">
      <h3>Markov Chain Text Generation</h3>
      <p>info about proj</p>
      <img src="calc.jpg" alt="Markov Chain Text Generation">
    </div>
    <div class="img">
      <p>heres SOME IMAGE</p>
    </div>
  </article>
  <article class="project-elem">
    <div class="project-n" id="audio">
      <h3>Song Similarities</h3>
      <p>info about proj</p>
      <img src="calc.jpg" alt="Audio Spectral Analysis">
    </div>
    <div class="img">
      <p>heres SOME IMAGE</p>
    </div>
  </article>
  <article class="project-elem">
    <div class="project-n" id="tree">
      <h3>DFS/BFS Search Tree</h3>
      <p>info about proj</p>
      <img src="calc.jpg" alt="Simple Trees">
    </div>
    <div class="img">
      <p>heres SOME IMAGE</p>
    </div>
  </article>
</div>

然而，即使我明确地填充了 project-elem，实际的 project-elem 文章并没有被填充（相反，将所有内容混合成一个 lime-green blob）：

我可以看出项目元素之间没有填充，因为在每个 lime-green 项目元素之间看不到外部划分（bkgrd 颜色为紫色）。为什么会这样，我该如何解决？

此外，我怎样才能使 img class vertically-even 与 project-n class?

Answer 1

您可能需要 margin-bottom 而不是 padding-bottom；

通过使用填充，您不会将它们分开，填充的工作方式类似于 from-inside。

您可以阅读盒模型 here 以了解这一点。

Answer 2

我建议你为此使用 flex-box。它会是这样的：

html
<html>
<head>
<style>
.project-elem {
    background-color: greenyellow;
    padding-top: 5rem;
    padding-bottom: 5rem;
    height: 300px;
    display: flex;
    justify-content: space-between;
}

.projects {
    margin: 0;
    background-color: #DDCDE8;
    font: Asap, sans-serif;
    height: 1000px;
    box-sizing: border-box;
}

.project-n {
    background-color: green;
    text-align: center;
    width: 60%;
    padding: 2.5rem;
    box-sizing: border-box;
}

.img {
    background-color: blue;
    text-align: center;
    padding: 3rem;
    box-sizing: border-box;
    width: 25%;
}

</style>
</head>
<body>
<div class="projects" id=#projects>
        <h2>My Projects</h2>

        <article class="project-elem">
            <div class="project-n" id="dictocounter">
                <h3>Dictation Counter</h3>
                <p>info about proj</p>
                <img src="dictocounter1.jpg" alt="Dictocounter in Action">
            </div>
            <div class="img">
                <p>heres SOME IMAGE</p>
            </div>
        </article>

        <article class="project-elem">
            <div class="project-n" id="calc">
                <h3>RPN Calculator</h3>
                <p>info about proj</p>
                <img src="calc.jpg" alt="RPN Calculator Decoding Input">
            </div>
            <div class="img">
                <p>heres SOME IMAGE</p>
            </div>
        </article>
        
        <article class="project-elem">
            <div class="project-n" id="markov">
                <h3>Markov Chain Text Generation</h3>
                <p>info about proj</p>
                <img src="calc.jpg" alt="Markov Chain Text Generation">
            </div>
            <div class="img">
                <p>heres SOME IMAGE</p>
            </div>
        </article>

        <article class="project-elem">
            <div class="project-n" id="audio">
                <h3>Song Similarities</h3>
                <p>info about proj</p>
                <img src="calc.jpg" alt="Audio Spectral Analysis">
            </div>
            <div class="img">
                <p>heres SOME IMAGE</p>
            </div>
        </article>

        <article class="project-elem">
            <div class="project-n" id="tree">
                <h3>DFS/BFS Search Tree</h3>
                <p>info about proj</p>
                <img src="calc.jpg" alt="Simple Trees">
            </div>
            <div class="img">
                <p>heres SOME IMAGE</p>
            </div>
        </article>
    </div>
</body>
</html>

Answer 3

由于 project-elem 只有 padding 而没有 margin，所以 class "project-elem"

不同元素之间没有间隙

根据您的要求将填充更改为边距，如下所示：

.project-elem {
  background-color: greenyellow;
  margin-top: 5rem;
  margin-bottom: 5rem;
  height: 300px;
}

.projects {
  margin: 0;
  padding: .7rem;
  background-color: #DDCDE8;
  font: Asap, sans-serif;
  height: 1000px;
}

.project-n {
  background-color: green;
  text-align: center;
  width: 60%;
  float: left;
  padding: 2.5rem;
}

.img {
  background-color: blue;
  text-align: center;
  padding: 3rem;
  margin-left: 40%;
}

了解填充和边距之间的区别。你可以参考这个：

在 html 中填充文章元素

padding article elements in html

html

css

padding