forms - Fixed width for buttons or proportional with the text? - User Experience Stack Exchange

What is the best practice for a UI, to make all the similar buttons with a fixed-width, no matter how long is the text (with the condition to fit) or make the width proportional with the text and a

forms - Fixed width for buttons or proportional with the text

forms - Fixed width for buttons or proportional with the text

forms - Fixed width for buttons or proportional with the text

forms - Fixed width for buttons or proportional with the text

forms - Fixed width for buttons or proportional with the text