Question

我的HTML由以下内容组成：

<html>
    <body>
    </body>
</html>

它体内有很多东西。这是我的CSS：

html {
    width: 100%;
    height: 100%;
}

body {
    background-image:url("../images/backgroundImage.jpg");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

html页面的主体有很多东西（足以迫使用户必须向下滚动才能到达页面底部）。问题是背景不会一直向下延伸到页面底部。当我第一次打开html页面时，背景图像占据了所有内容但是当我向下滚动时，只能通过滚动看到的部分有白色背景，图像没有到达需要滚动的部分才能被看到

如何使背景图像延伸到需要滚动的部分才能看到？

Answer 1

您可以使用background-attachment: fixed;使背景图像与页面一起滚动，从而无需延伸整个高度。

轻松修复;）

Answer 2

如果您可以选择其他标记，则可以使用包含所有内容的包装元素。

http://jsfiddle.net/SombreErmine/L6ubk/

<强> HTML：

<div class="page-wrapper">
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</div>

<强> CSS：

html, body {
    width: 100%;
    height: 100%;
    margin: 0;
    padding: 0;
}

.page-wrapper {
    background-image:url("http://placekitten.com/200/300");
    background-repeat: no-repeat;
    background-size: 100% 100%;
}

p {
    margin: 0;
    padding: 1em;
}

Answer 3

你有一些选择：

纯css：

background-size: cover;

这将使背景图像填满页面，无论窗口有多宽/高。当然，您需要关注图像如何以分辨率方式显示。对于拥有大显示器的人来说，你需要一个大的形象。

添加一些html / css：

将背景图像分配给单独的div

<div class="this-has-a-big-bg"></div>

并将其全高度和固定位置放在其他内容后面：

.this-has-a-big-bg {
  postion: fixed;
  z-index: -1;
  height: 100%;
  width: 100%;
}

您还需要将html / body尺寸设置为100％。

或者最后，一些带有on.scroll侦听器的javascript / jquery。但这不应该是必需的。

CSS：给出100％高度的背景图像（包括滚动）

3 个答案: