HTML Automatic line-break doesn't work?

I declared width and margins but somehow my lines didn't get wrapped with an automatic line-break.

enter image description here

edit: I found the cause. It's because there are no spaces between words:

teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;teest&nbsp;

Solution

The element where text is should have css declaration:

div {
    display: block;
    width: 200px; /*based on how much width this div should have*/
}

and if it doesn't work try doing:

div { word-wrap: break-word }