How do I remove this thing??

[ArchKing_Therm]

Ok, I am making a Web IDE. I am using Ace. This little box pops up and make the cursor look like its in a different position than it is. How do I remove this box?

Thanks.

[Harutyun Amirjanyan]

use the following css rule:

.ace_mobile-menu {
    display: none;
}