列表项堆叠在一起，绝对定位

Question

我试图在宽度和高度方面将导航栏放在div的中间。这个解决方案似乎可以完成这项工作，除了它将列表中的每个项目堆叠在一起。我之前读过一些帖子，这似乎与我使用绝对定位的事实有关。但我无法找到解决这个问题的方法。

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html {
  box-sizing: border-box;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
}

.container {
  background-color: red;
  padding: 0;
  margin: 0;
}

p {
  margin: 0;
}

p+p {
  margin-top: 10px;
}

.site-navigation {
  background-color: yellow;
  text-align: center;
  height: auto;
  /* Basically saying fit all children within the container */
  overflow: hidden;
  position: relative;
}

.site-navigation figure {
  padding: 0;
  margin: 0;
  float: left;
}

.site-navigation ul {
  padding: 0;
  margin: 0;
}

.site-navigation ul li {
  list-style-type: none;
  display: inline-block;
}

.site-navigation ul li a {
  text-decoration: none;
  color: black;
  margin-right: 20px;
  padding: 0;
  position: absolute;
  top: 50%;
}

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<header class="container site-header">
  <div class="innercontainer site-header">
    <p> some text here </p>
  </div>
</header>

<nav class="container site-navigation">
  <figure>
    <img src="nav.png" />
  </figure>
  <ul>
    <li>
      <a href="#">Home</a>
    </li>

    <li>
      <a href="#">Repairs</a>
    </li>

    <li>
      <a href="#">Contact</a>
    </li>
  </ul>
</nav>

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Answer 1

您在position:absolute标记中使用的是a，这就是它陷入困境的原因。

更新css部分

.site-navigation ul {
  padding: 0;
  margin: 0;
  position: absolute; /* Add this */
  left: 0px;  /* Add this */
  right: 0px;  /* Add this */
  margin: 0 auto;  /* Add this */
}
.site-navigation ul li a {
    text-decoration: none;
    color: black;
    margin-right: 20px;
    padding: 0;
   /*position: absolute;*/
  /*top: 50%;*/
}

html {
  box-sizing: border-box;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
}

.container {
  background-color: red;
  padding: 0;
  margin: 0;
}

p {
  margin: 0;
}

p+p {
  margin-top: 10px;
}

.site-navigation {
  background-color: yellow;
  text-align: center;
  height: auto;
  /* Basically saying fit all children within the container */
  overflow: hidden;
  position: relative;
}

.site-navigation figure {
  padding: 0;
  margin: 0;
  float: left;
}

.site-navigation ul {
  padding: 0;
  margin: 0;
  position: absolute;
  left: 0px;
  right: 0px;
  margin: 0 auto;
}

.site-navigation ul li {
  list-style-type: none;
  display: inline-block;
}

.site-navigation ul li a {
  text-decoration: none;
  color: black;
  margin-right: 20px;
  padding: 0;
}

<header class="container site-header">
  <div class="innercontainer site-header">
    <p> some text here </p>
  </div>
</header>

<nav class="container site-navigation">
  <figure>
    <img src="nav.png" />
  </figure>
  <ul>
    <li>
      <a href="#">Home</a>
    </li>

    <li>
      <a href="#">Repairs</a>
    </li>

    <li>
      <a href="#">Contact</a>
    </li>
  </ul>
</nav>

Answer 2

html {
  box-sizing: border-box;
}

*,
*:before,
*:after {
  box-sizing: inherit;
}

body {
  margin: 0;
  padding: 0;
}

.container {
  background-color: red;
  padding: 0;
  margin: 0;
}

p {
  margin: 0;
}

p+p {
  margin-top: 10px;
}

.site-navigation {
  background-color: yellow;
  text-align: center;
  height: auto;
  /* Basically saying fit all children within the container */
  overflow: hidden;
  position: relative;
}

.site-navigation figure {
  padding: 0;
  margin: 0;
  float: left;
}

.site-navigation ul {
  padding: 0;
  margin: 0;
}

.site-navigation ul li {
  list-style-type: none;
}

.site-navigation ul li a {
  text-decoration: none;
  color: black;
  margin-right: 20px;
  padding: 0;
}

<header class="container site-header">
  <div class="innercontainer site-header">
    <p> some text here </p>
  </div>
</header>

<nav class="container site-navigation">
  <figure>
    <img src="nav.png" />
  </figure>
  <ul>
    <li>
      <a href="#">Home</a>
    </li>

    <li>
      <a href="#">Repairs</a>
    </li>

    <li>
      <a href="#">Contact</a>
    </li>
  </ul>
</nav>