If the URL is unknown CSS Template

Teal Contrast and Rounded Actions Define the Error State

The teal background establishes the block’s visual field, while white typography and controls create strong contrast for the “Page not found” heading and the supporting message, “The requested URL was not found on this server.” Because the content is centered and surrounded by generous empty space, the error state remains visually separate from the rest of the containing page. The large 404 illustration and magnifying-glass motif reinforce the meaning before visitors read the text.

For a CSS Template interpretation, the useful focus is the relationship between those styling properties and the block’s recovery function. Color, contrast, spacing, illustration scale, and rounded button treatment can be refined without changing the message hierarchy. The two actions remain visually grouped beneath the explanation, but their shared shape and alignment can be adjusted to make the recovery choices clearer. The section’s styling should preserve the distinction between the unavailable-page notice and the available next steps.

This makes the block suitable for projects that need a deliberately designed error state rather than an unformatted server notice. The appearance belongs to this centered section: it does not establish a site-wide palette or imply that other pages use the same teal treatment.