When user reduces window size horizontally and this causes floats to stack vertically, remove the floats and on the second div (that was a float) use margin-top: -123px (your value) and margin-left: 444px (your value) to position the divs as they appeared with floats. When done this way, when the window narrows, the right-side div stays in place and disappears when page is too narrow to include it. ... which (to me) is better than having the right-side div "jump" down below the left-side div when the browser window is narrowed by the user.

When user reduces window size horizontally and this causes floats to stack vertically, remove the floats and on the second div (that was a float) use margin-top: -123px (your value) and margin-left: 444px (your value) to position the divs as they appeared with floats. When done this way, when the window narrows, the right-side div stays in place and disappears when page is too narrow to include it. ... which (to me) is better than having the right-side div "jump" down below the left-side div when the browser window is narrowed by the user.

我解决这个问题的方法是使用一些jQuery。我这样做的原因是因为A和B是宽度的百分比。

HTML:

<div class="floatNoWrap">
    <div id="A" style="float: left;">
        Content A
    </div>
    <div id="B" style="float: left;">
        Content B
    </div>
    <div style="clear: both;"></div>
</div>

CSS:

.floatNoWrap
{
    width: 100%;
    height: 100%;
}

jQuery:

$("[class~='floatNoWrap']").each(function () {
    $(this).css("width", $(this).outerWidth());
});

将这一行添加到浮动元素选择器中

.floated {
    float: left;
    ...
    box-sizing: border-box;
}

它将防止填充和边框添加到width，所以元素始终保持在行，即使你有eg。三个元素宽度为33.33333%

另一个选择是，不使用浮动，而是将空白属性nowrap设置为父div:

.parent {
     white-space: nowrap;
}

并重置空白和使用内联块显示，这样div保持在同一行，但你仍然可以给它一个宽度。

.child {
    display:inline-block;
    width:300px;
    white-space: normal;
}

这是一个JSFiddle: https://jsfiddle.net/9g8ud31o/

用最小宽度大于浮动体的组合宽度+边距的div包装浮动体。

不需要黑客或HTML表格。