相关疑难解决方法(0)

我想设置元素position来absolute和有一个margin-bottom,但似乎margin-bottom没有效果.

HTML:

<div id='container'></div>

CSS:

#container {
  border: 1px solid red;
  position: absolute; 
  top: 0px;
  right: 0px;
  width: 300px;
  margin-bottom: 50px; // this line isn't working
}