The reason your transform: translateX is being ignored is due to CSS Cascading rules. When you assign a transform in an animation's @keyframes, it completely overrides any transform property set directly on the element or through media queries.In CSS, you cannot "merge" two separate transform declarations on the same element; the last one defined (or the one in the active animation) wins.Here are the two best ways to fix this:Option 1: The "Wrapper" Method (Recommended)The cleanest solution is to separate the positioning from the animation. Wrap your element in a container div.The Wrapper: Use this for your media queries and translateX positioning.The Inner Element: Apply the infinite animation to this element.Option 2: Use CSS Custom Variables (Properties)If you don't want to change your HTML structure, you can use CSS Variables ($--variable$) to pass the media query value into the animation.Why this happens (The Technical Bit)When an animation is active, it creates a "computed style" that takes precedence over the standard CSS declaration block. Since transform is a single property, the browser doesn't know how to add translateX(media-query) to translateX(animation) unless you explicitly use calc() or nested elements.
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