To mark a field is required with red *

[owen.campbell]

This was something I did a little while back:

Making mandatory text boxes obvious

Here’s a quick and simple way to put a red border on a text box that’s mandatory but hasn’t been completed: In Theme, Assets, go to ‘Configure roles…’, add a new role and add ‘TextBox’ to its component types. I called mine ‘mandatory-textbox’ Add two entries to ‘theme.css’: .anvil-role-mandatory-textbox:placeholder-shown { border: 1px solid red; } .anvil-role-mandatory-textbox:-ms-input-placeholder { border: 1px solid red; } The second entry is to make this work on Internet Explorer and…