I'm using Bulma version 0.3.0
My browser is: Google Chrome Version 59.0.3071.109 (Official Build) (64-bit)
When the property height is set to auto for an audio element, the height of that element becomes zero while browser renders it with a default height, so that it appears cut or above other html elements. Removing "height: auto;" for audio tags solves the problem.
The audio element should have the height assigned by default (user agent stylesheet).
The audio element appears cut or above other html elements.
Image 1:

Image 2:

Nice catch! Fixing now.
This issue does not appear to be fixed. The CSS still sets height: auto; for the audio tag. As I understand it, this is a problem because audio has no height property. For some reason, this doesn't make a difference in Firefox or Safari, but it breaks in Chrome.
Are you going to merge this fix anytime soon @jgthms ?
Most helpful comment
This issue does not appear to be fixed. The CSS still sets
height: auto;for theaudiotag. As I understand it, this is a problem becauseaudiohas no height property. For some reason, this doesn't make a difference in Firefox or Safari, but it breaks in Chrome.