How to keep text inside the parent?

Lets say take this as an example:

<!DOCTYPE html>
  <link type="text/css" rel="stylesheet" href="s.css">

  <div id="container">


* {

#container {
  border: 2px solid red;

And it displays like so:

enter image description here

What do I do to place this kind of texts always within the parent div?


You could use word-wrap:break-word.

#container {
  margin: 10px;
  width: 400px;
  border: 2px solid red;
  word-wrap: break-word;

jsFiddle example

Alternatively, you could also use overflow:hidden, which will hide the overflow. This is assuming you don’t want the text to wrap. jsFiddle example

Lastly, there is overflow:scroll which will allow you to scroll through the overflow. Note - there will always be a scrollbar regardless of the length of the text. To avoid this you could also use overflow:auto. I don’t know what you want. jsFiddle example of overflow:scroll