Rquirements：
基于flexbox 纯HTML / CSS没有Jquery / JS 没有明确声明DIV宽度，就像内容
所需要的那样在下面的代码中，我希望页脚用省略号截断（以便不解释容器div），或者更好地换行到下一行。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
.truncate {
white-space: nowrap;
overflow-x: hidden;
text-overflow: ellipsis;
}
</style>
</head>
<div class="row" style="display:flex; justify-content: flex-start; padding: px; border: 2px solid red;">
<div class='olb-container' style=' width: fit-content; display: flex; flex-direction: column; justify-content: flex-start; margin: 5px; border: 2px solid green;'>
<div class='olb-header' style='display: flex; justify-content: center; overflow-x: hidden; border: 1px solid black; padding: 0 3px 2.5px 3px; font-size: 125%; font-weight: 900;'>HEADER</div>
<div class='olb-center' style='display: flex; flex-direction: row; border: 1px solid black;'>
<div class='olb-yes-col' style='display: flex; flex-direction: column; align-items: stretch; border: 1px solid black; '>
<div class='olb-yes-title' style='border-bottom: 1px solid black; padding: 2.5px 3px 3px 3px;'>YES</div>
<div class='olb-yes-checks' style='padding: 2.5px 3px 3px 3px;'>
<div style='display: flex; flex-direction: column; align-items: center'>
<input class='olb-yes' type='checkbox' data-text='aaa' value=true>
<input class='olb-yes' type='checkbox' data-text='bbb' value=true>
</div>
</div>
</div>
<div class='olb-items-col' style='display: flex; flex-direction: column; align-items: stretch; border: 1px solid black;'>
<div class='olb-items-title' style='border-bottom: 1px solid black; ; padding: 2.5px 3px 3px 3px;'>LABEL</div>
<div class='olb-items-text' style='display: flex; flex-direction: column; align-items: center; padding: 2px; padding: 2.5px 3px 3px 3px;'>
<div>aaaa</div>
<div>bbb</div>
</div>
</div>
<div class='olb-no-col' style='display: flex; flex-direction: column; align-items: stretch; border: 1px solid black;'>
<div class='olb-no-title' style='border-bottom: 1px solid black; padding: 2.5px 3px 3px 3px;'>NO</div>
<div class='olb-no-checks' style='padding: 2.5px 3px 3px 3px;'>
<div style='display: flex; flex-direction: column; align-items: center'>
<input class='olb-no' type='checkbox' data-text='aaa' value=true>
<input class='olb-no' type='checkbox' data-text='bbb' value=true>
</div>
</div>
</div>
</div>
<div class='olb-footer' style='display: flex; align-content: flex-start; overflow: hidden; border: 1px solid black; padding: 2.5px 3px 0 3px; font-size: 60%; text-decoration: italics;'>
<div style="">FOOTERafd sdf fsddsfkjsdgfdskjgkjhgfa</div>
</div>
</div>
</body>
</html>
答案 0 :(得分：2)
解决方案是使用绝对位置使您的内容脱离流程，并且您不需要指定宽度，因为通过指定top / left / bottom / right，您将获取已定义的所有空间：< / p>
.truncate {
white-space: nowrap;
overflow-x: hidden;
text-overflow: ellipsis;
}
.olb-footer {
position: relative;
}
.olb-footer:before {
content: "A"; /* Add at least one hidden letter to create the space for a line */
visibility: hidden;
}
.content {
position: absolute;
top: 0;
right: 0;
left: 0;
bottom: 0;
white-space: nowrap;
text-overflow: ellipsis;
overflow: hidden;
}<div class="row" style="display:flex; justify-content: flex-start; padding: px; border: 2px solid red;">
<div class='olb-container' style=' width: fit-content; display: flex; flex-direction: column; justify-content: flex-start; margin: 5px; border: 2px solid green;'>
<div class='olb-header' style='display: flex; justify-content: center; overflow-x: hidden; border: 1px solid black; padding: 0 3px 2.5px 3px; font-size: 125%; font-weight: 900;'>HEADER</div>
<div class='olb-center' style='display: flex; flex-direction: row; border: 1px solid black;'>
<div class='olb-yes-col' style='display: flex; flex-direction: column; align-items: stretch; border: 1px solid black; '>
<div class='olb-yes-title' style='border-bottom: 1px solid black; padding: 2.5px 3px 3px 3px;'>YES</div>
<div class='olb-yes-checks' style='padding: 2.5px 3px 3px 3px;'>
<div style='display: flex; flex-direction: column; align-items: center'>
<input class='olb-yes' type='checkbox' data-text='aaa' value=true>
<input class='olb-yes' type='checkbox' data-text='bbb' value=true>
</div>
</div>
</div>
<div class='olb-items-col' style='display: flex; flex-direction: column; align-items: stretch; border: 1px solid black;'>
<div class='olb-items-title' style='border-bottom: 1px solid black; ; padding: 2.5px 3px 3px 3px;'>LABEL</div>
<div class='olb-items-text' style='display: flex; flex-direction: column; align-items: center; padding: 2px; padding: 2.5px 3px 3px 3px;'>
<div>aaaa</div>
<div>bbb</div>
</div>
</div>
<div class='olb-no-col' style='display: flex; flex-direction: column; align-items: stretch; border: 1px solid black;'>
<div class='olb-no-title' style='border-bottom: 1px solid black; padding: 2.5px 3px 3px 3px;'>NO</div>
<div class='olb-no-checks' style='padding: 2.5px 3px 3px 3px;'>
<div style='display: flex; flex-direction: column; align-items: center'>
<input class='olb-no' type='checkbox' data-text='aaa' value=true>
<input class='olb-no' type='checkbox' data-text='bbb' value=true>
</div>
</div>
</div>
</div>
<div class='olb-footer' style='display: flex; align-content: flex-start; overflow: hidden; border: 1px solid black; padding: 2.5px 3px 0 3px; font-size: 60%; text-decoration: italics;'>
<div class="content">FOOTERafd sdf fsddsfkjsdgfdskjgkj hgfa</div>
</div>
</div>