Expected behavior

I would like to change all inputs border color easily (datepicker, textarea, text, select, ...).

Changing the border color of inputs is a basic modification that have to be easier.

Actual behavior

It's wrongly displayed when I use the CSS rules previously advised by you : label is crossed by a border, the CSS rule doesn't apply for every type of input doesn't work for select input, ...

Resources (screenshots, code snippets etc.)

Changing border color of inputs isn't working anymore (you explained it for 3.X versions, not working in 4.X versions).

Exemple for 3.10 (snippet by you) : https://mdbootstrap.com/snippets/standard/m-duszak/3631331

Exemple for 4.0 (same snippet with 4.0 version by me) : https://mdbootstrap.com/snippets/standard/zecchini/4023202

Same problem as : https://mdbootstrap.com/support/standard/change-focus-color-to-inputs-and-textareas-in-mdb5/

Thank you for your time