Edit file File name : block.json Content :{ "$schema": "https://schemas.wp.org/trunk/block.json", "apiVersion": 3, "name": "core/cover", "title": "Cover", "category": "media", "description": "Add an image or video with a text overlay.", "textdomain": "default", "attributes": { "url": { "type": "string" }, "useFeaturedImage": { "type": "boolean", "default": false }, "id": { "type": "number" }, "alt": { "type": "string", "default": "" }, "hasParallax": { "type": "boolean", "default": false }, "isRepeated": { "type": "boolean", "default": false }, "dimRatio": { "type": "number", "default": 100 }, "overlayColor": { "type": "string" }, "customOverlayColor": { "type": "string" }, "isUserOverlayColor": { "type": "boolean" }, "backgroundType": { "type": "string", "default": "image" }, "focalPoint": { "type": "object" }, "minHeight": { "type": "number" }, "minHeightUnit": { "type": "string" }, "gradient": { "type": "string" }, "customGradient": { "type": "string" }, "contentPosition": { "type": "string" }, "isDark": { "type": "boolean", "default": true }, "allowedBlocks": { "type": "array" }, "templateLock": { "type": [ "string", "boolean" ], "enum": [ "all", "insert", "contentOnly", false ] }, "tagName": { "type": "string", "default": "div" } }, "usesContext": [ "postId", "postType" ], "supports": { "anchor": true, "align": true, "html": false, "shadow": true, "spacing": { "padding": true, "margin": [ "top", "bottom" ], "blockGap": true, "__experimentalDefaultControls": { "padding": true, "blockGap": true } }, "__experimentalBorder": { "color": true, "radius": true, "style": true, "width": true, "__experimentalDefaultControls": { "color": true, "radius": true, "style": true, "width": true } }, "color": { "__experimentalDuotone": "> .wp-block-cover__image-background, > .wp-block-cover__video-background", "heading": true, "text": true, "background": false, "__experimentalSkipSerialization": [ "gradients" ], "enableContrastChecker": false }, "dimensions": { "aspectRatio": true }, "typography": { "fontSize": true, "lineHeight": true, "__experimentalFontFamily": true, "__experimentalFontWeight": true, "__experimentalFontStyle": true, "__experimentalTextTransform": true, "__experimentalTextDecoration": true, "__experimentalLetterSpacing": true, "__experimentalDefaultControls": { "fontSize": true } }, "layout": { "allowJustification": false }, "interactivity": { "clientNavigation": true } }, "editorStyle": "wp-block-cover-editor", "style": "wp-block-cover" } Save