alert-dismissible close button not clickable with stretched-link

Created by: LeaTark

The close button of a dismissible alert is not clickable if the alert contains a stretched link. https://codepen.io/LeaTark/pen/bGNLyZy

It works if the close button is given a z-index greater than that of stretched-link. https://codepen.io/LeaTark/pen/MWYQMej