<p>I'm trying to create a form that has an expandable widget. The problem is that when the widget is open, The form extends outside the limit in the content box, and it looks bad.</p>

<p>I tried using <code>overflow:scroll</code> but it creates 2 ugly scrollbars that do not disappear even if the content is smaller then the content box. I only need one vertical scrollbar.</p>

<p>Visual Studio also alerted that overflow-y is not available in CSS.</p>

Change your overflow to
```
auto
```
and define the height and/or width of the element.