Logging this on behalf of Keith.
1. Move search field (actually, rename to "search by keyword/phrase") to a more prominent location, e.g. just above the images.
2. Hint to users to use the search field, esp Pixabay screen (where API call for preview image may be unsuccessful). We can add a text to indicate these are sample images, and they can find more just by searching.
3. The Filters of categories are not working yet, so best to hide them for now.
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