structural diffs

horizontal sticky header to maintain context

prediction cone/safe triangle - horizontal buffer increases as pointer approaches nested menu - caches bounding boxes to prevent reflows

guidelines for building interfaces on the web interactions, animations, layout, content, forms, performance, design & copywriting includes an AGENTS​.md

nbsp wrapping behavior for non-inline elements

wig

in-product empty state with personalized example username is derived from logged in user this way the user can feel it x.com/vercel_chan... x.com/vercel_chan...

set `scroll-margin-top` on headers for spacing between the header and the top of the viewport

every section is deep-linkable

an iteration on @rauno's prior - reduced motion variant - preserves text selection - accessibility tools announce the sentence instead of letter-by-letter - no enter animation on mount x.com/raunofreibe...

set `theme-color` to make the web page seamless with ios safari

emphasize deep-linked section on load - css-only, uses `:target` and `:has`

set html/body background color to match website color so overscroll area blends in

optically align icon

subpixel rendering bugs uses the `transform: translateZ(0)` spell to fix with bug

some of the things that we subconsciously think about when building interfaces

it's easier to fix environment variable-related build errors - emphasizes missing variable name - shows solution in-context - minimizes the work the user has to do ty @alanaagoyal for suggestion

hit targets scale based on the size - prevents overlapping hit targets x.com/JohnPhamous...

status transitions

sometimes hit targets need to be larger than the visual the line is 2px wide and 10px tall green is the target area, shown here as a visualization, not rendered in prod

chart annotations progressively disclosed in the tooltip - stroke on the annotations to avoid bars looking fuzzy

chart for showing changes between 2 different time periods - uses css subgrid

a personal readme kinda like llms.txt but for humans

borders and shadows without the fuzziness - automatically doesn't draw shadows in dark mode, only border

inspired by @colebemis, gonna fix a papercut a day to get familiar with the codebase day 1

day 1

pie progress transitions

flickering dots grid pattern - canvas - custom layout engine for perfect tiling no matter the dot/gap/container size

buttons designed by @bradleyziffer

better typescript dx for components that need to accept colors from your design system - type checking - suggestions

animated console.log message - svg with <animate> - doesn't play looping animation when `prefers-reduced-motion`

weightlifter a terminal-inspired progressive web app to track weightlifting - tells you what plates to rack - optimizes warmup -> working set plates to minimize re-racks - progressive overloading for reps and weight - dynamic rest times based on heart rate during exercise

xmcp fan art

responsive change chart if there's not enough room - x-axis labels staggers - y-axis labels truncates all css

bar list - hovering over a row de-emphasizes other rows - no dead gaps between rows to prevent flickering

selection color depends on the content

adding a stroke on the text to increase legibility can use `-webkit-text-stroke` to add stroke use `paint-order: stroke` so the stroke is drawn behind the text left is with `paint-order`, right is without

searching logs - active search result always show up in same y-position on screen, minimizes eye travel distance when going through results - keyboard controls to move to next and previous search results

call to action

histogram chart - tooltip shows absolute/%s for left and right

date times - always show in local timezone - show in your coworker's timezones - for devtools context, show UTC and ISO - uses <time> - relative as a shorthand so the reader doesn't have to math

gm ny

search input - modifier keys are os-aware e.g. ⌘/Ctrl - modifier keys are hidden when there's no keyboard attached, reduces noise - hides the modifier keys when focused, gets out of the way of the user - optional prop `captureFocus` will focus and forward any key events on the page to the input

service map connection lines represent the state - healthy, green, flowing well - degraded, amber, flow slowed - offline, red, no flow, blinking - unknown, gray, no flow

line chart - y-axis shows min, mid, max - x-axis shows relative to now - tooltip shows "in progress" to educate reader

durations shows local, utc, and iso date times in tooltip - tabular nums for alignment making comparing local & utc easier - iso shown cause devtools commonly use this - year shown in local/utc only if they're diff years between each other or the current year

grouping and collapsing log lines based on type

add to calendar

perceptually uniform color maps useful in heat maps where value differences are equal to the differences in colors

testing against different vision deficiencies