Floating elements within a div, floats outside of div. Why?

Question

Say you have a div, give it a definite width and put elements in it, in my case an img and another div.

The idea

Answer 1

Thank you LSerni you solved it for me.

To achieve this :

+-----------------------------------------+
| +-------+                     +-------+ |
| | Text1 |                     | Text1 | |
| +-------+                     +-------+ |
|+----------------------------------------+

You have to do this :

    
 Text1 
    
 Text2