https://css-tricks.com/almanac/properties/o/opacity/
Jan 27, 2025 - The opacity property in CSS specifies how transparent an element is.
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https://coder-coder.com/background-image-opacity/
Nov 5, 2024 - Quick solution to how you can change background-image opacity using CSS without affecting the text content or child HTML elements.
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https://www.debugbear.com/blog/opacity-animation-poor-lcp
Nov 10, 2025 - Chrome doesn't count elements with an opacity of 0 as LCP candidates. If the elements are repainted later on this can increase the LCP.
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https://css-tricks.com/almanac/functions/o/opacity/
Feb 19, 2026 - The CSS opacity() function applies a transparency filter to an element and its content. It is used with the filter property.
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