CSS，从新网页开始，尝试将导航栏放在中间，宽度为 95%(每边有 2,5% 的自由)

Question

我试图让这段代码在中间和 95% 处显示我的导航栏(每侧 2,5% 空闲(。我在互联网上找到了几种方法，但它们需要我使用不同的风格，我想保持相同。

#nav ul {
  position: fixed;
  top: 5px;
  width: 100%;
  list-style-type: none;
  margin: 0;
  margin-left: 10%;
  padding: 0;
  overflow: hidden;
  background-color: #ffffff;
}
#nav li {
  float: left;
}
#nav li a {
  display: block;
  color: #0066cc;
  text-align: center;
  padding: 10px 20px;
  text-decoration: none;
}
#nav li a:hover {
  background-color: #111;
}
#nav .active {
  background-color: #ffffff;
  border-top-width: 5px;
  border-top-style: solid;
  border-top-color: #0066cc;
  border-bottom-width: 5px;
  border-bottom-style: solid;
  border-bottom-color: #0066cc;
}
#nav .inactive {
  border-width: 5px;
  border-top-style: solid;
  border-top-color: #ffffff;
  border-top-color: #0066cc;
  border-bottom-width: 5px;
  border-bottom-style: solid;
  border-bottom-color: #0066cc;
}
Html part:

  <div id="nav">
    <ul>
      <li><a class="active" href="../HTML/Home.html">Home</a></li>
      <li><a class="inactive" href="../HTML/Shop.html">Shop</a></li>
      <li><a class="inactive" href="../HTML/SocialNews.html">Social News</a></li>
      <li><a class="inactive" href="../HTML/Gallary.html">Gallary</a></li>
      <li><a class="inactive" href="../HTML/CustomerReviews.html">Customer Reviews</a></li>
      <li><a class="inactive" href="../HTML/Sponsorship.html">Sponsorship</a></li>
      <li><a class="inactive" href="../HTML/Contact.html">Contact</a></li>
      <li><a class="inactive" href="../HTML/Cart.html">Cart</a></li>
    </ul>
  </div>

Answer 1

使用 width: 95%; left: 50%; transform: translateX(-50%); 使菜单宽度为 95% 并居中。

然后将display: flex添加到菜单中，flex: 1 0 0到li以拉伸这些元素，以便它们填满菜单。

#nav ul {
  position: fixed;
  top: 5px;
  list-style-type: none;
  padding: 0;
  overflow: hidden;
  background-color: #ffffff;
  width: 95%;
  display: flex;
  left: 50%;
  transform: translateX(-50%);
}
#nav li {
  flex: 1 0 0;
}
#nav li a {
  display: block;
  color: #0066cc;
  text-align: center;
  padding: 10px 20px;
  text-decoration: none;
  height: 100%;
  box-sizing: border-box;
}
#nav li a:hover {
  background-color: #111;
}
#nav .active {
  background-color: #ffffff;
  border-top-width: 5px;
  border-top-style: solid;
  border-top-color: #0066cc;
  border-bottom-width: 5px;
  border-bottom-style: solid;
  border-bottom-color: #0066cc;
}
#nav .inactive {
  border-width: 5px;
  border-top-style: solid;
  border-top-color: #ffffff;
  border-top-color: #0066cc;
  border-bottom-width: 5px;
  border-bottom-style: solid;
  border-bottom-color: #0066cc;
}

<div id="nav">
    <ul>
      <li><a class="active" href="../HTML/Home.html">Home</a></li>
      <li><a class="inactive" href="../HTML/Shop.html">Shop</a></li>
      <li><a class="inactive" href="../HTML/SocialNews.html">Social News</a></li>
      <li><a class="inactive" href="../HTML/Gallary.html">Gallary</a></li>
      <li><a class="inactive" href="../HTML/CustomerReviews.html">Customer Reviews</a></li>
      <li><a class="inactive" href="../HTML/Sponsorship.html">Sponsorship</a></li>
      <li><a class="inactive" href="../HTML/Contact.html">Contact</a></li>
      <li><a class="inactive" href="../HTML/Cart.html">Cart</a></li>
    </ul>
  </div>