我想设计一个带有横幅和iframe的网页。我希望iframe可以填充所有剩余的页面高度,并在浏览器调整大小时自动调整大小。是否有可能不编写JavaScript代码,只使用CSS来完成?
我尝试在iframe上设置高度:100%,结果非常接近,但iframe试图填充整个页面高度,包括横幅div元素的30px高度,所以我得到了不必要的垂直滚动条。它并不完美。
我尝试了CSS的margin, padding属性在DIV上成功地占据了网页的整个剩余高度,但这个技巧在iframe上不起作用。
<身体>
< div风格= "宽度:100%;高度:30 px;background - color: # cccccc;" > < / div >旗帜
<iframe src="http: //www.google.com.tw" style="width:100%;高度:100%;" > < / iframe >
身体< / >
以下是一些现代的方法:
Approach 1 - Combination of viewport relative units / calc().
The expression calc(100vh - 30px) represents the remaining height. Where 100vh is the height of the browser and the usage of calc() effectively displaces the height of the other element.
Example Here
body {
margin: 0;
}
.banner {
background: #f00;
height: 30px;
}
iframe {
display: block;
background: #000;
border: none;
height: calc(100vh - 30px);
width: 100%;
}
<div class="banner"></div>
<iframe></iframe>
Support for calc() here; support for viewport relative units here.
Approach 2 - Flexbox approach
Example Here
Set the display of the common parent element to flex, along with flex-direction: column (assuming you want the elements to stack on top of each other). Then set flex-grow: 1 on the child iframe element in order for it to fill the remaining space.
body {
margin: 0;
}
.parent {
display: flex;
flex-direction: column;
min-height: 100vh;
}
.parent .banner {
background: #f00;
width: 100%;
height: 30px;
}
.parent iframe {
background: #000;
border: none;
flex-grow: 1;
}
<div class="parent">
<div class="banner"></div>
<iframe></iframe>
</div>
Since this approach has less support1, I'd suggest going with the aforementioned approach.
1虽然它似乎在Chrome/FF中工作,但它在IE中不起作用(第一种方法在所有当前的浏览器中都有效)。