Focus selector #html #css #styling
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TTimeBandit
Last edited Sep 19, 2018
Created on Sep 18, 2018
This example demonstrates how CSS focus styling can transform a simple HTML element into an interactive visual indicator. The code uses a `div.container` with a nested `div.output` that has a `tabindex="0"` attribute, making it keyboard-navigable. When focused, the output element switches from a light background with dark monospace text to an inverted black background with whitesmoke text, while also applying a subtle box-shadow. The styling relies entirely on the `:focus` pseudo-class and basic CSS properties like `background-color`, `color`, and `padding`, with no JavaScript or external libraries involved.
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