Css 位置固定在 header 隐藏内容

Question

我正在制作一个新网站，但 header 有问题...我将 header 的位置设置为固定，这有效，但 header 下面的内容=22=] 被隐藏了。我试图用 margin-top: 10px 将内容向下移动，但它所做的只是将 header 向下移动。

Link 到 jsfiddle：

http://jsfiddle.net/vwzhda41/

Answer 1

尝试使用

padding-top: 58px;/*the height of the header*/`

而不是

margin-top:10px;

Answer 2

将padding-top:58px;添加到.responsiveContainer并将top:0;添加到.header。

Jsfiddle

.responsiveContainer {
    width: 100%;
    // Add padding top
    padding-top: 58px;
}

.header {
    background-color: #000000;
    padding: 10px;
    padding-left: 0;
    padding-right: 0;
    box-shadow: 0 5px 0 #232323;
    text-align: center;
    width: 100%;
    position: fixed;
    //   Add top 0
    top: 0;
}

根据MDN：

fixed

Do not leave space for the element. Instead, position it at a specified position relative to the screen's viewport and don't move it when scrolled. When printing, position it at that fixed position on every page. This value always create a new stacking context.

Answer 3

/* Copyright © 2015 Dynavio */

/* Main Site Settings */

*,
body {
  padding: 0;
  margin: 0;
}
body {
  background-color: #FFFFFF;
}
.responsiveContainer {
  width: 100%;
}
/* End Of Main Site Settings */

/* Header */

.header {
  background-color: #000000;
  padding: 10px;
  padding-left: 0;
  padding-right: 0;
  box-shadow: 0 5px 0 #232323;
  text-align: center;
  width: 100%;
  position: fixed;
}
.navbar {
  background-color: #131313;
  padding: 10px;
}
.navElem {
  display: inline;
  margin: -2px;
}
.navLink {
  text-decoration: none;
  padding: 10px;
  padding-top: 11px;
  color: #FFFFFF;
  font-family: SinkinSans;
  transition: all 0.5s;
  -moz-transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -o-transition: all 0.5s;
}
.navLink:hover {
  background-color: #0044FF;
  box-shadow: 0 5px 0 #01268A;
}
.navLink:visited {
  color: #FFFFFF;
}
.active {
  background-color: #0044FF;
  box-shadow: 0 5px 0 #01268A;
}
/* End Of Header */

/* Site Content */

.startBox {
  background-color: #0044FF;
  position: relative;
  top: 50px;
}
/* End Of Site Content */

/* Alignment Classes */

.alignLeft {
  text-align: left;
}
/* End Of Alignment Classes */

<div class="responsiveContainer">
  <div class="header">
    <div class="navbar">
      <ul>
        <li class="navElem"><a href="#" class="navLink active">Home Page</a>
        </li>
        <li class="navElem"><a href="#" class="navLink">Our Products</a>
        </li>
        <li class="navElem"><a href="#" class="navLink">Contact Us</a>
        </li>
        <li class="navElem"><a href="#" class="navLink">About Us</a>
        </li>
      </ul>
    </div>
  </div>
  <div class="startBox">
    <p>dwddwwdwdd</p>
  </div>
</div>

Answer 4

您需要将 <div class="header"> 放在具有定义高度的 div 中，例如：

<div class="heightTest">
<div class="header">
    <div class="navbar">
        <ul>
          ...
        </ul>
    </div>
</div>
</div>

和css：

.heightTest{height:90px;}

Jsfiddle：http://jsfiddle.net/vwzhda41/2/

Css 位置固定在 header 隐藏内容

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