css - div 自适应高度 自动填充剩余高度
问题描述
固定的盒子需要绝对定位才能实现以下效果，希望有不需要绝对定位实现以下方法的大神！求指点
<!DOCTYPE html><html lang='en'><head> <meta charset='UTF-8'> <title>Document</title> <style> html, body {height: 100%;padding: 0;margin: 0;overflow: hidden; }.outer {height: 100%;padding: 100px 0 0;box-sizing: border-box; }.A {height: 100px;background: #BBE8F2;position: absolute;top: 0;left: 0;width: 100%; }.B {height: 100%;background: #D9C666;overflow: scroll; } </style></head><body> <p class='outer'><p class='A'> 头部p </p><p class='B'> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdfD</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdfD</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdfD</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdfD</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdfD</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdfD</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>abcabsdf</p> <p>sssssssssssssssssssssss</p> </p> </p></body></html>
问题解答
回答1：问题有点模糊，如果是要求A+B等于outer的高度，可以用calc(100% - 100px);
回答2：浮动 固定定位
回答3：你的问的不太明白啊，能说的具体点吗？
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![$fields = $values = [];这条代码一直定义不了，一直报错，老师的源码也是被报错的,执行不了,请问该怎么解决这个问题](http://www.haobala.com/attached/image/news/202205/093622cb60.png)
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