Hello @ZinoJK , please add it below the “base.css” named line. below 280th line. Please check it.
Topic summary
Randomly one color variant image fails to display on the Nest Bed product page in Shopify Dawn v13.0.0; on each load, exactly one of 8 colors is hidden.
Root cause identified in CSS: under the desktop media query (min-width: 750px), non-active gallery items are set to display: none for .product–thumbnail_slider .product__media-item:not(.is-active), which sometimes hides a variant image.
Proposed fixes: either change those items to display: block or remove the slider selector from the rule that hides non-active items. Step-by-step screenshots were provided to add custom CSS after base.css and to make changes in a staging theme first.
Implemented resolution: corrected a selector typo (.product__media-item–variant:first-child with an unintended space) and forced display: block !important. Variant images now show as intended.
New issue (desktop only; mobile OK): clicking other product photos displays the clicked image below the variant image, suggesting duplicate rendering.
Latest finding: the template contains two slider-component instances, likely causing the duplication. Further investigation is ongoing; no final fix yet.
Notes: screenshots of devtools and theme editor were central to diagnosing and applying CSS changes.