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Because if a checked radio button would be completely filled, it would be confusing to tell which button is actually selected, especially if there are only 2 radio buttons. You could just as easily think the "white filled" button is active instead of the "blacked out one". Save this answer.
- What appears in circle of radio button when it is selected?
- Should radio buttons be stacked?
- Why are buttons circular?
- Should radio buttons be horizontal or vertical?
What appears in circle of radio button when it is selected?
A radio button usually contains a small circle with text next to it. When you make a selection, a dot appears in the circle to indicate your selection. If you select one button in the set, the previously selected button is deselected. Only one of the options is selected at a time.
Should radio buttons be stacked?
Based on research from the Neilson Norman Group as well as the various human interface guidelines for Apple and Microsoft, radio buttons should have the circle to the left of the label, and the list should be stacked vertically.
Why are buttons circular?
Round corners communicate a sense of simplicity, optimism, and openness. It probably explains why many design systems adapted to rounded corners and used them broadly in icons, buttons, and illustrations.
Should radio buttons be horizontal or vertical?
Vertical positioning of radio buttons is safer. Try to lay out your lists vertically, with one choice per line. If you still need a horizontal layout with multiple options per line, make sure to space the buttons and labels so that it's absolutely clear which choice goes with which label.
