我在页面的左侧有一个导航栏，我想让它伸展到页面高度的100%。不仅是视口的高度，还包括滚动之前隐藏的区域。我不想用javascript来完成这个。
它能在HTML/CSS中完成吗?
当前回答
* {
margin: 0;
}
html, body {
height: 90%;
}
.content {
min-height: 100%;
height: auto !important;
height: 100%;
margin: 0 auto ;
}
其他回答
下面是我最终想出的解决方案，当使用div作为动态背景的容器时。
删除非后台使用的z索引。 删除全高列的左或右。 删除全宽行的顶部或底部。
编辑1:下面的CSS已经被编辑，因为它在FF和Chrome中没有正确显示。移动位置:相对于HTML上的位置，并将正文设置为height:100%而不是min-height:100%。
编辑2:添加额外的注释到CSS。上面增加了更多的说明。
CSS:
html{
min-height:100%;/* make sure it is at least as tall as the viewport */
position:relative;
}
body{
height:100%; /* force the BODY element to match the height of the HTML element */
}
#cloud-container{
position:absolute;
top:0;
bottom:0;
left:0;
right:0;
overflow:hidden;
z-index:-1; /* Remove this line if it's not going to be a background! */
}
html:
<!doctype html>
<html>
<body>
<div id="cloud-container"></div>
</body>
</html>
Why?
html{min-height:100%;position:relative;}
否则，云容器DIV将从HTML的布局上下文中移除。position: relative确保DIV在绘制时仍然在HTML框内，因此bottom:0指的是HTML框的底部。你也可以在云容器上使用height:100%，因为它现在指的是HTML标签的高度，而不是视口。
我也遇到过类似的问题，解决方法是这样的:
#cloud-container{
position:absolute;
top:0;
bottom:0;
}
我想要一个以页面为中心的div高度100%的页面高度，所以我的总解决方案是:
#cloud-container{
position:absolute;
top:0;
bottom:0;
left:0;
right:0;
width: XXXpx; /*otherwise div defaults to page width*/
margin: 0 auto; /*horizontally centers div*/
}
你可能需要让一个父元素(或简单的“body”)具有位置:relative;
我遇到了和你一样的问题。我想做一个DIV作为背景，为什么，因为它很容易通过javascript操作DIV。无论如何，我在css中为那个div做了三件事。
CSS:
{
position:absolute;
display:block;
height:100%;
width:100%;
top:0px;
left:0px;
z-index:-1;
}
这就是如何使你的侧导航与页面内容一样高，而不必改变主体为伸缩或表格。
不要将html或body的高度设置为100%，因为那样会使它只和浏览器视口一样高，页面会溢出，而你的导航只会和视口一样高。
只需将你的导航设置为高度:100%位置:绝对与html标签位置:相对。
The reason this works is because height 100% only works if its container is fixed height, with the exception (for some reason) the html tag. <html style='position:relative'> <body style='margin:0'> <div style='height:100%; position:absolute; top:0; background:linear-gradient(to bottom,red,green); border:2px solid blue'> nav </div> <div style='font-size:99px;padding:33px'> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> I want my side div to be as tall as the page content.<br /> </div> </body> </html>
我想在提示一个模态弹出窗口之前覆盖整个网页。我尝试了许多方法使用CSS和Javascript，但没有一个帮助，直到我想出以下解决方案。它对我有用，我希望它也能帮助到你。
<!DOCTYPE html> <html> <head> <style> html, body { margin: 0px 0px; height 100%; } div.full-page { position: fixed; top: 0; bottom: 0; width: 100%; height: 100%; background-color: #000; opacity:0.8; overflow-y: hidden; overflow-x: hidden; } div.full-page div.avoid-content-highlight { position: relative; width: 100%; height: 100%; } div.modal-popup { position: fixed; top: 20%; bottom: 20%; left: 30%; right: 30%; background-color: #FFF; border: 1px solid #000; } </style> <script> // Polling for the sake of my intern tests var interval = setInterval(function() { if(document.readyState === 'complete') { clearInterval(interval); isReady(); } }, 1000); function isReady() { document.getElementById('btn1').disabled = false; document.getElementById('btn2').disabled = false; // disable scrolling document.getElementsByTagName('body')[0].style.overflow = 'hidden'; } function promptModalPopup() { document.getElementById("div1").style.visibility = 'visible'; document.getElementById("div2").style.visibility = 'visible'; // disable scrolling document.getElementsByTagName('body')[0].style.overflow = 'hidden'; } function closeModalPopup() { document.getElementById("div2").style.visibility = 'hidden'; document.getElementById("div1").style.visibility = 'hidden'; // enable scrolling document.getElementsByTagName('body')[0].style.overflow = 'scroll'; } </script> </head> <body id="body"> <div id="div1" class="full-page"> <div class="avoid-content-highlight"> </div> </div> <button id="btn1" onclick="promptModalPopup()" disabled>Prompt Modal Popup</button> <div id="demo"> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> <h2>Original content</h2> </div> <div id="div2" class="modal-popup"> I am on top of all other containers <button id="btn2" onclick="closeModalPopup()" disabled>Close</button> <div> </body> </html>
祝你好运;-)
