我曾多次使用float:右(或左)将图像和嵌入框浮动在容器顶部。现在，我需要浮动一个div到另一个div的右下角与正常的文本包装，你得到的浮动(文本包装上面和左边只有)。
我认为这一定是相对容易的，即使浮动没有底部值，但我还没有能够做到这一点使用一些技术和搜索网络还没有出现任何其他使用绝对定位，但这并没有给出正确的换行行为。
我原以为这是一种很常见的设计，但显然不是。如果没有人有建议，我将不得不把我的文本分解成单独的盒子，并手动对齐div，但这是相当不稳定的，我不想在每个需要它的页面上都这样做。
当前回答
我知道这些东西很旧了，但我最近遇到了这个问题。
使用绝对位置跳水的建议是非常愚蠢的，因为整个浮动的东西失去了绝对位置。
现在，我没有找到一个通用的解决方案，但在很多情况下，人们使用浮动div只是为了在一行中显示一些东西，比如一系列的span元素。你不能垂直对齐。
为了达到类似的效果，你可以这样做:不让div浮动，但设置它的display属性为inline-block。然后你可以按照自己的喜好垂直排列。你只需要设置父div属性vertical-align为顶部，底部，中间或基线
我希望这能帮助到一些人
其他回答
通过一些JavaScript，我成功地将一个浮动元素固定在它的容器底部——并且仍然让它在文本中浮动，这对于像shape-outside这样的事情非常有用。
被浮动的元素得到一个margin-top赋值，它等于它的容器，减去它自己的高度。这将保留浮动，将元素推到其容器的底边，并防止文本在元素下面流动。
const resizeObserver = new ResizeObserver(entries => {
if(entries.length == 0) return;
const entry = entries[0];
if(!entry.contentRect) return;
const containerHeight = entry.contentRect.height;
const imgHeight = imgElem.height;
const imgOffset = containerHeight - imgHeight;
imgElem.style.marginTop = imgOffset + 'px';
});
const imgElem = document.querySelector('.image');
resizeObserver.observe(imgElem.parentElement);
工作示例:https://codepen.io/strarsis/pen/QWGXGVy
多亏了ResizeObserver和对JavaScript的广泛支持，这似乎是一个非常可靠的解决方案。
浮动和绝对定位的组合对我来说很有用。我试图把消息的发送时间放在语音气泡的右下角。时间不应该与消息体重叠，除非真的有必要，否则它不会使气泡膨胀。
解决方案是这样的:
有两个跨度，文本完全相同; 一个漂浮着，但看不见; 另一个是绝对定位到角落;
不可见的浮动对象的目的是保证可见对象的空间。
.speech-bubble { font-size: 16px; max-width: 240px; margin: 10px; display: inline-block; background-color: #ccc; border-radius: 5px; padding: 5px; position: relative; } .inline-time { float: right; padding-left: 10px; color: red; } .giant-text { font-size: 36px; } .tremendous-giant-text { font-size: 72px; } .absolute-time { position: absolute; color: green; right: 5px; bottom: 5px; } .hidden { visibility: hidden; } <ul> <li> <span class='speech-bubble'> This text is supposed to wrap the time <span> which always seats at the corner of this bubble. <span class='inline-time'>13:55</span> </span> </li> <li> <span class='speech-bubble'> Absolute positioning doesn't work because it doesn't care if the two pieces of text overlap. We want to float. <span class='inline-time'>13:55</span> </span> </li> <li> <span class='speech-bubble'> Easy, uh? <span class='inline-time'>13:55</span> </span> </li> <li> <span class='speech-bubble'> Well, not <span class='giant-text'>THAT</span> easy <span class='inline-time'>13:56</span> </span> </li> <li> <span class='speech-bubble'> <span class='tremendous-giant-text'>See?</span> <span class='inline-time'>13:56</span> </span> </li> <li> <span class='speech-bubble'> The problem is, we can't tell the span to float to right AND bottom... <span class='inline-time'>13:56</span> </span> </li> <li> <span class='speech-bubble'> We can combinate float and absolute: use floated span to reserve space (the bubble will be inflated if necessary) so that the absoluted span is safe to go. <span class='inline-time'>13:56</span> </span> </li> <li> <span class='speech-bubble'> <span class='tremendous-giant-text'>See?</span> <span class='inline-time'>13:56</span> <span class='absolute-time'>13:56</span> </span> </li> <li> <span class='speech-bubble'> Make the floated span invisible. <span class='inline-time'>13:56</span> </span> </li> <li> <span class='speech-bubble'> <span class='tremendous-giant-text'>See?</span> <span class='inline-time hidden'>13:56</span> <span class='absolute-time'>13:56</span> </span> </li> <li> <span class='speech-bubble'> The giant text here is to simulate images which are common in a typical chat app. <span class='tremendous-giant-text'>Done!</span> <span class='inline-time hidden'>13:56</span> <span class='absolute-time'>13:56</span> </span> </li> </ul>
If you're okay with only the bottom-most line of the text going to the side of the block (as opposed to completely around and underneath it, which you can't do without ending the block and starting a new one), it's not impossible to float a block to one of the bottom corners of a parent block. If you put some content in a paragraph tag within a block and want to float a link to the bottom right corner of the block, put the link within the paragraph block and set it to float: right, then put in a div tag with clear: both set just underneath the end of the paragraph tag. The last div is to make sure the parent tag surrounds the floated tags.
<div class="article" style="display: block;">
<h3>title</h3>
<p>
text content
<a href="#" style="display: block;float: right;">Read More</a>
</p>
<div style="clear: both;"></div>
</div>
目前这是不可能的。有不同的方法来解决将内容对齐到底边(flex, grid, table, absolute)。然而，这些方法不尊重float，因此内容不会围绕这些元素流动。
如果有一天浏览器和csswg对浮动元素的定义达成一致，那么在css中浮动元素就有可能实现。
先进的资源:
https://drafts.csswg.org/css-page-floats/#float-property
https://github.com/w3c/csswg-drafts/issues/1251
设置父div为position: relative，然后内部div为…
position: absolute;
bottom: 0;
.．.就这样了。
