html - 在保持 parent 填充的同时使 child 可滚动

Question

我想让子 div (.content) 在超过父元素高度时可以滚动。我遇到的问题是维护它的父填充(.box 填充)，这样.content的文本就不会放在底部边缘。

.box 高度不固定为 250px，仅用于演示目的。

Fiddle

HTML

<div class="box">
 <h3>Title</h3>
 <div class="content">
  <p>
   Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. 

    Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. 
  </p>
 </div>
</div>

CSS

.box {
  width: 250px;
  height: 250px; //height is not fixed, just for demonstration purposes.
  padding: 25px;      
  overflow: hidden;

  background-color: rgb(200,200,200);
}

.content {
  overflow: scroll;
}

Answer 1

只需使用这个 CSS:

.box {
  display:flex;
  flex-flow: column;
  width: 250px;
  height: 250px;
  padding: 25px;
  overflow: hidden;
  background-color: rgb(200,200,200);
}

.content {
  flex:2;
  height:100%;
  width:100%;
  overflow-y: scroll;//only for y axis
}

JSFiddle: https://jsfiddle.net/08ea4ehm/4/