Utilitarian palette with functional colors for status.
03
Typography
system-sans
display60px · 400
heading30px · 400
body16px · 400
Use system font stack for broad compatibility. · Use standard font weights (400, 600) for clear hierarchy. · Maintain consistent line-height for readability.
04
Spacing
4px
8px
16px
24px
32px
48px
64px
96px
Standard 4px grid based on base 16px size.
05
Surfaces
sm · 0px
md · 0px
lg · 20px
pill · 999px
1px solid #404040
none
06
Layout
1280container
12columns
24pxgutter
768 / 1024breakpoints
Simple single-column layout for error state.
07
Motion & Interaction
150msmicro
400mssmall
800msmedium
cubic-bezier(0, 0, 0.2, 1)easing
Standard hover transition on interactive elements.
Cursor changes to pointer on links. · Standard browser behavior.
08
Components
buttonNot present.
cardStatus icon row with labels and status indicators.
chipError code badge.
inputNot present.
heroLarge error title with timestamp.
09
Voice & Don'ts
ToneTechnical and direct.
HeadlinesClear error message.
CTAsInformational links.
Don't use custom fonts — screenshot shows system font stack.
Don't use complex gradients — screenshot shows flat colors.
Don't use decorative shadows — screenshot shows minimal UI.
Don't use a wide color palette — screenshot shows limited functional colors.
Captured from the live site · real computed styles
11
System prompt
This is a standard Cloudflare error page with a utilitarian design focused on clear communication. The layout is simple, single-column, and responsive. Key colors are neutral (#404040, #999999, #D9D9D9) with functional accents (#2F7BBF for links, #99CA3E for success, #BD2426 for error). Typography relies on the system font stack with standard weights for hierarchy. Critical donts: do not introduce decorative elements, avoid custom typography, and do not use a wide color palette. The design prioritizes readability and diagnostic clarity over brand expression.
Bring this taste to your agent
Hand your AI agent a machine-readable spec of this design — tokens, type, motion, the whole DNA.