CSS Tabs Playground

Solid ink-violet bar slides horizontally beneath the active tab. JS measures offsetLeft + offsetWidth so the bar matches each tab's exact width — no fixed-width assumption — and re-aligns on viewport resize.

Each tab owns its own electric accent via a CSS custom property. The active tab lights up with a neon border and a soft outer glow in its color. Pure CSS via radio inputs and `:has()` panel switching.

Heavy uppercase tabs with hard 4px black offset shadows. Active tab presses flush — shadow collapses, button translates 4px down-right, color inverts. Tactile mechanical-keyboard feedback.

Four color-coded tabs each with a dedicated tint, border, and active-state glow. Violet, rose, cyan, lime — each tab keeps its identity whether active or inactive. Pure CSS.

IDE-inspired file tabs with language-colored dots and editor chrome. The active tab lifts with a top accent stripe and matches the editor surface, just like VS Code. Pure CSS.

Apple-style segmented control: gray track, white pill that physically slides between segments. JS measures positions live; resize-listener keeps the pill aligned at any width.

Three-column bento grid where the tabs themselves are the cards. The active card lifts, gains a colored top stripe, and the panel becomes the fourth bento cell underneath. Pure CSS.

Sidebar nav with a connecting timeline rule. The active item's dot fills in solid teal with a soft outer glow; inactive dots stay hollow. Vertical layout. Pure CSS.

Vintage CRT terminal aesthetic: green phosphor text, scanline overlay, macOS traffic lights in the title bar. Active tab shows a blinking caret cursor. Pure CSS.

Compact icon-only tabs that expand on activation: the label morphs in via a max-width transition, smoothly widening the active tab inline. Pure CSS, no positional JS.

Activating a tab triggers a typewriter animation on the panel: text reveals via max-width steps animation, with a blinking cursor at the end. Pure CSS via radio inputs and steps() timing.

Each tab click spawns 8 small color sparks that fly outward and fade. JS positions each particle at the click point; CSS animates trajectory + fade. The active tab is also highlighted with a coral underline.

Tab labels read as letterpress specimen slugs. The active tab is announced by a 4-digit serial that flips digits on activation, and a mint underline draws under the active label.

The active tab's first letter scales 14→32px, baseline-shifts down, and crops at the tab's right edge. Inactive labels stay at compact display size.

Vertical icon-driven nav inspired by hand-built dashboard sidebars. Dusty olive accent bar slides between rows; the active icon shifts left and a label slides in from behind it.

Mobile-style nav-bar tabs in a soft white pill. Inactive icons are line-only grey. Activating a tab tints the icon mint, blooms a soft pink halo behind it, and slides the label in to the right of the icon — no underline, just the color shift and the label appearance.

Pure type-weight contrast. Inactive sits at 200 hairline, active jumps to 900 black with a subtle scale lift. The brand violet underlines the active label.

Tiny uppercase mono labels above a single thick rule. The rule slides under the active label — measured live, like a sliding bookmark on a typecase shelf.

Inactive tabs are mono single-letter initials. The active tab unfolds into a rotating-and-scaling serif drop cap followed by the rest of the word; tail unfolds left-to-right.

Active tab is a solid safety-yellow plate stamped on ink. Pure two-color print — black ink on yellow for the active label, muted yellow on ink for inactive. The 2px upward translate gives the yellow plate a small physical lift over the surrounding stage.

The active tab is framed by typographic brackets — `[` on the left, `]` on the right — that physically slide between tabs. A single shared pair of pseudo-elements does the work.

Each tab is a distinct primary-color block. Active tab rises 6px and casts a hard offset shadow. Color and geometry as the entire indicator.

The whole bar is cream-on-crimson. The active tab inverts — crimson ink stamped on cream. A single-frame impact shadow flashes on activation, like a rubber stamp pressing in.

Hairline-framed tabs in warm-white stock. Active tab's top edge thickens to 4px deep-navy AND four corner dots materialize at the frame's extremes — a Bodoni stroke-contrast move with editorial restraint.

Mobile-style bottom-nav with hot-pink active pill that grows around the active icon and label. Inactive items show only icons; activation adds the label inside the pill.

Two-color riso print on charcoal stock. Active tab is a solid orange block with a cyan plate misregistered 4px below-left, like a zine pulled with the cyan plate slightly off the orange. No swashes, no icons; just two color plates and a typographic punch.

Italic slab-serif labels on warm-cream stock. The active tab gets a deep-emerald swash underline — a curved SVG stroke beneath the word, like a calligrapher's flourish on letterpress vellum.

The whole bar reads as a foundry specimen card. Foundry name on the left in tiny mono; tabs on the right are large display glyph specimens. On activation the foundry name pulses a single beat.

Icon + label tabs on cream stock. A solid indigo pill is the indicator; it physically slides between tabs on click, with the active label inverting to cream.

Inactive tabs are flat sand-colored rectangles on charcoal. The active tab's top-right corner physically folds down 18px via clip-path with a darker fold-underside triangle, lifts 4px above its siblings, and shows a small fold preview on hover. Inactive tabs preview an 8px fold on hover so the mechanic is discoverable.

Icon nav on warm-linen stock with a velvet aubergine ribbon trimmed in gilt. The ribbon hangs down from the top rail directly above the active icon — measured live so it stays perfectly aligned at any stage width. Jewel-toned, club-bookplate atmosphere.

Active label sits inside a chiseled negative-space well. Inset shadow stack on a darker rectangle gives the impression letters are carved into brass-tinted slate. Pure CSS box-shadow, no images.