溢出的内容div不会停在图片的底部

Question

内容会向上滚动到div # in /path/to/my_project/Gemfile ... gem 'my_gem', :path => '/path/to/my_gem' ... 的顶部，而不会停留在图片的底部并显示文字#photos

＆＃13;

＆＃13;

D

＆＃13;

#mainContent {
  padding: 2px 0;
  clear: both;
  float: left;
  margin-left: 0;
  width: 100%;
  height: 0;
  padding-bottom: 45%;
  background-color: #CCC;
}
#photos {
  height: 0;
  padding-bottom: 35%;
  overflow-x: hidden;
  overflow-y: auto;
}

＆＃13;

＆＃13;

＆＃13;