Resizing the page makes the buttons broken

[agazso]

When changing the width of the page the buttons start to be broken.

• [x] Vertical size change (example: first strong button)
• [x] Text in two lines (example: first strong button)
• [x] Missing icon (example: second strong button)
• [x] Small icon size (example: Open light overlay button)

PR for testing: https://github.com/diete-design/diete.design/pull/49

Screenshot with the dev console on the right:

Screenshot with the original width: