I have a problem when I fill in the html input field like:

If I add one more character, it drops out like:

This is the css:

form {
    -webkit-column-count: 3; /* Chrome, Safari, Opera */
    -moz-column-count: 3; /* Firefox */
    column-count: 3;
}

      

        
        
        
      

    

Here is the fiddle

I've only tested this with chrome.

Update

This one does not perform in safari

Update 2

This one doesn't work in firefox

Here is the bug report