Html 响应高度与宽度成正比
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Responsive height proportional to width
提问by fedor.belov
Is it possible to implement the following logic usic HTML and CSS?
是否可以使用 HTML 和 CSS 实现以下逻辑?
width: 100%;
height: 30% of width;
What I want to implement: If I decrease the width, the height will also decrease proportionally.
我想实现的:如果我减小宽度,高度也会成比例地减小。
回答by Matt Coughlin
Padding %
填充%
This can be achieved by giving the element height:0
and padding-bottom:30%
.
这可以通过给元素height:0
和来实现padding-bottom:30%
。
In all browsers, when padding is specified in %, it's calculated relative to the parent element's width. This can be a very useful feature for Responsive Design.
在所有浏览器中,当以 % 指定填充时,它是相对于父元素的宽度计算的。这对于响应式设计来说可能是一个非常有用的功能。
In the demo, the blue box at the top of the page is a single div
. The height is responsive, and it can contain a variable amount of inline content without increasing the height. It tested fine in IE7/8/9/10, Firefox, Chrome, Safari, and Opera.
在演示中,页面顶部的蓝色框是一个div
. 高度是响应式的,它可以在不增加高度的情况下包含可变数量的内联内容。它在 IE7/8/9/10、Firefox、Chrome、Safari 和 Opera 中测试良好。
.content {
width: 100%;
height: 0;
padding-bottom: 30%;
}
...
<div class="content"></div>
Padding % and absolute position
填充百分比和绝对位置
If there are any problems with using a 0-height element, the demoalso has a green box that's implemented using a wrapper element and absolute position. Not sure if there are any advantages to this approach.
如果使用 0-height 元素有任何问题,演示中还有一个使用包装元素和绝对位置实现的绿色框。不确定这种方法是否有任何优势。
.wrapper {
position: relative;
width: 100%;
padding-bottom: 30%;
}
.wrapper .content {
position: absolute;
width: 100%;
height: 100%;
}
...
<div class="wrapper">
<div class="content"></div>
</div>
回答by ndp
This is now possible on modern browsers with vw
and vh
units:
这现在可以在带有vw
和vh
单位的现代浏览器上实现:
width: 100vw;
height: 30vw; /* 30% of width */
Browser support: http://caniuse.com/#feat=viewport-units
浏览器支持:http: //caniuse.com/#feat=viewport-units
Yeah!
是的!
回答by sebnukem
Also with JQuery, you could do:
同样使用 JQuery,您可以执行以下操作:
$(window).ready(function () {
var ratio = 3 / 10, $div = $('#my_proportional_div');
$div.height($div.width() * ratio);
$(window).bind('resize', function() { $div.height($div.width() * ratio); });
});
because the Padding %solution suggested doesn't work with max/min-width
and max-min height
.
因为建议的Padding %解决方案不适用于max/min-width
and max-min height
。