如何将 div 的内容对齐到底部？

Question

Say I have the following CSS and HTML code:

#header {
  height: 150px;
}

<div id="header">
  <h1>Header title</h1>
  Header content (one or multiple lines)
</div>

The header section is fixed height, but the header content may change. I would like to content of the header to be vertically aligned to the bottom of the header section, so the last line of text "sticks" to the bottom of the header section.

So if there is only one line of text it would be like:

-----------------------------
| Header title
|
|
|
| header content (resulting in one line)
-----------------------------

And if there were three lines:

-----------------------------
| Header title
|
| header content (which is so
| much stuff that it perfectly
| spans over three lines)
-----------------------------

How can this be done in CSS?

</div>

转载于:https://stackoverflow.com/questions/585945/how-to-align-content-of-a-div-to-the-bottom

Answer 1

Relative+absolute positioning is your best bet:

#header {
  position: relative;
  min-height: 150px;
}

#header-content {
  position: absolute;
  bottom: 0;
  left: 0;
}

#header, #header * {
  background: rgba(40, 40, 100, 0.25);
}

<div id="header">
  <h1>Title</h1>
  <div id="header-content">Some content</div>
</div>

But you may run into issues with that. When I tried it I had problems with dropdown menus appearing below the content. It's just not pretty.

Honestly, for vertical centering issues and, well, any vertical alignment issues with the items aren't fixed height, it's easier just to use tables.

Example: Can you do this HTML layout without using tables?

</div>