How do I remove the horizontal scrollbar in a div?

overflow-x: hidden;

Don't forget to write overflow-x: hidden;

The code should be:

overflow-y: scroll;
overflow-x: hidden;

CSS

overflow-y: scroll;

See it on jsFiddle.

Notice if you remove the -y from the overflow-y property, the horizontal scroll bar is shown.

With overflow-y: scroll, the vertical scrollbar will always be there even if it is not needed. If you want y-scrollbar to be visible only when it is needed, I found this works:

.mydivclass {overflow-x: hidden; overflow-y: auto;}

Add this code to your CSS. It will disable the horizontal scrollbar.

html, body {
    max-width: 100%;
    overflow-x: hidden;
}