Use with a table blocks content on macOS Safari

[RandScullard]

I am setting a resize handler on a table element, and this works fine in Chrome, Firefox, and IE. However, on macOS Safari 10.1.1, the resize-triggers div blocks some of the table content. That is, you can see the content but you can't get click events to it.

I fixed this in my local copy of detect-element-resize by simply changing createStyles to specify z-index: -1 in the style block for resize-triggers etc. This fixed the problem, apparently without any negative consequences.