how to I keep an item in the same place when I scroll? -

How do I create it, when I have my sidebar at the same place below

I around Have seen, but still can not get anything.

This is my code

  & lt; Div class = "example" & gt; // stuff goes here & lt; / Div & gt; & Lt; Style & gt; .example {float: left; Background: blue; Width: 100px; Height: 100 pixels; } & Lt; / Style & gt;   
 Thanks in advance   
 
 
 . Sidebar {status: fixed; Correct: 0; Top: 0; }   
 I think you want to follow him while scrolling?