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about: Pranesh Nikhar about/more: 🪪 More docs/test: Docs Test ideas: 💡 Ideas more: ➕ More now: Now posts: 📬 Posts projects: 📚 Projects webtui: Style posts/agentic-eda: 📊 AgenticEDA — Automated Exploratory Data Analysis with LangGraph posts/cap-theorem-outage-story: 🌐 CAP Theorem with a Real Outage Story posts/codepilot: ✈️ CodePilot — From Requirements to Deployable FastAPI Backend posts/common-auth-mistakes: 🔐 Common Auth Mistakes Developers Make posts/compiled-vs-jit-vs-interpreted: ⚡ Why Is X Language Fast or Slow? — Compiled vs JIT vs Interpreted posts/cs-degree-gaps: 🎓 Things CS Degrees Don't Teach You posts/cve-2025-breach-analysis: 🛡️ CVE-2025 Breach Analysis — Midnight Blizzard and the 16 Billion Credential Leak posts/fixloop: 🔄 FixLoop — AI Agent Loop for Self-Correcting Code posts/functional-vs-oop: ⚡ Functional vs OOP — Same Problem, Both Ways posts/getman: 🦾 Getman — Declarative API Tester for CLI & TUI posts/how-compilers-optimize: ⚙️ How Compilers Actually Optimize Your Code posts/http3-quic: ⚡ HTTP/3 and QUIC — Why They Matter posts/leetcode-vs-engineering: 🧩 LeetCode vs Real Engineering Skills posts/llm-from-scratch: 🧠 LLM from Scratch — GPT-Style Transformer in PyTorch posts/lsm-trees-bloom-filters: 🌳 LSM Trees & Bloom Filters — Production Deep Dive posts/mcp-workflow-builder: 🔧 MCP Workflow Builder — Visual DAG for MCP Tools posts/persistent-memory: 🧠 Persistent Memory — Long-Term Memory for AI Agents via MCP posts/playcli: 🎬 PlayCLI — Terminal Video Player posts/postgres-mvcc: 🗄️ How PostgreSQL MVCC Works — Multi-Version Concurrency Control Deep Dive posts/raft-consensus: ⛵ Raft Consensus Algorithm Explained posts/rust-borrow-checker: 🦀 Rust Borrow Checker — Catches Real Bugs posts/titan: 🤖 Titan — Terminal AI Coding Agent posts/what-happens-url: 🌐 What Happens Between Typing a URL and Seeing the Page posts/what-happens-when-you-run-a-program: ⚙️ What Actually Happens When You Run a Program posts/zero-knowledge-proofs: 🔐 Zero-Knowledge Proofs Explained Simply webtui/components/accordion: Accordion webtui/components/badge: Badge webtui/components/button: Button webtui/components/checkbox: Checkbox webtui/components/dialog: Dialog webtui/components/input: Input webtui/components/popover: Popover webtui/components/pre: Pre webtui/components/progress: Progress webtui/components/radio: Radio webtui/components/range: Range webtui/components/separator: Separator webtui/components/spinner: Spinner webtui/components/switch: Switch webtui/components/table: Table webtui/components/textarea: Textarea webtui/components/tooltip: Popover webtui/components/typography: Typography webtui/components/view: View webtui/contributing/contributing: Contributing webtui/contributing/contributing: ## Local Development webtui/contributing/contributing: ## Issues webtui/contributing/contributing: ## Pull Requests webtui/contributing/style-guide: Style Guide webtui/contributing/style-guide: ## CSS Units webtui/contributing/style-guide: ## Selectors webtui/contributing/style-guide: ## Documentation webtui/installation/astro: Astro webtui/installation/astro: ## Scoping webtui/installation/astro: ### Frontmatter Imports webtui/installation/astro: ### ‹style› tag webtui/installation/astro: ### Full Library Import webtui/installation/nextjs: Next.js webtui/installation/vite: Vite webtui/plugins/plugin-dev: Developing Plugins webtui/plugins/plugin-dev: ### Style Layers webtui/plugins/plugin-nf: Nerd Font Plugin webtui/plugins/theme-catppuccin: Catppuccin Theme webtui/plugins/theme-custom: Custom Theme webtui/plugins/theme-everforest: Everforest Theme webtui/plugins/theme-gruvbox: Gruvbox Theme webtui/plugins/theme-nord: Nord Theme webtui/plugins/theme-vitesse: Vitesse Theme webtui/start/ascii-boxes: ASCII Boxes webtui/start/changelog: Changelog webtui/start/installation: Installation webtui/start/installation: ## Installation webtui/start/installation: ## Using CSS webtui/start/installation: ## Using ESM webtui/start/installation: ## Using a CDN webtui/start/installation: ## Full Library Import webtui/start/installation: ### CSS webtui/start/installation: ### ESM webtui/start/installation: ### CDN webtui/start/intro: Introduction webtui/start/intro: ## Features webtui/start/plugins: Plugins webtui/start/plugins: ## Official Plugins webtui/start/plugins: ### Themes webtui/start/plugins: ## Community Plugins webtui/start/theming: Theming webtui/start/theming: ## CSS Variables webtui/start/theming: ### Font Styles webtui/start/theming: ### Colors webtui/start/theming: ### Light & Dark webtui/start/theming: ## Theme Plugins webtui/start/theming: ### Using Multiple Theme Accents webtui/start/tuis-vs-guis: TUIs vs GUIs webtui/start/tuis-vs-guis: ## Monospace Fonts webtui/start/tuis-vs-guis: ## Character Cells
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Separator

A horizontal or vertical separator

1 <p>The quick brown fox obliterates</p>
2 <div is-="separator"></div>
3 <p>the lazy dog</p>
4
1
2 body {
3 display: flex;
4 flex-direction: column;
5 }
6

Import

@import '@webtui/css/components/separator.css';

Usage

<!-- Horizontal -->
<div is-="separator"></div>
<div is-="separator" direction-="horizontal"></div>
<div is-="separator" direction-="x"></div>

<!-- Vertical -->
<div is-="separator" direction-="vertical"></div>
<div is-="separator" direction-="y"></div>

If direction- is not specified, separators are horizontal by default.

Examples

Vertical

1 <p>The lazy brown<br/>dog licks</p>
2 <div is-="separator" direction-="vertical"></div>
3 <p>the yucky<br/>fox</p>
4
1
2 body {
3 display: flex;
4 flex-direction: row;
5 }
6

Caps

Use the cap- attribute to control how the ends of the separator behave

Bisecting Caps

cap-="bisect" extends the edges of the separator by 0.5ch making it ideal to use alongside the box- utility

1
2 <div class="column">
3 <div box-="square" class="column">
4 <p>Default</p>
5 <div is-="separator"></div>
6 <p>Separator</p>
7 </div>
8 <div box-="square" class="column">
9 <p>Bisecting</p>
10 <div is-="separator" cap-="bisect"></div>
11 <p>Separator</p>
12 </div>
13 </div>
14 <div class="column">
15 <div box-="square" class="row">
16 <p>Default</p>
17 <div is-="separator" direction-="y"></div>
18 <p>Separator</p>
19 </div>
20 <div box-="square" class="row">
21 <p>Bisecting</p>
22 <div is-="separator" direction-="y" cap-="bisect"></div>
23 <p>Separator</p>
24 </div>
25 </div>
26
1
2 body,
3 .row {
4 display: flex;
5 flex-direction: row;
6 flex: 1;
7 }
8 .column {
9 display: flex;
10 flex-direction: column;
11 flex: 1;
12 }
13

Edge Caps

cap-="edge" clips off the edges of the separator by 0.5ch making it ideal for corners

1
2 <div class="column">
3 <span>bisect</span>
4 <div is-="separator" cap-="bisect" direction-="y"></div>
5 <div is-="separator" cap-="edge"></div>
6 <span>edge</span>
7 </div>
8 <div class="column">
9 <span>bisect</span>
10 <div is-="separator" cap-="bisect" direction-="y"></div>
11 <div is-="separator"></div>
12 <span>default</span>
13 </div>
14 <div class="column">
15 <span>bisect</span>
16 <div is-="separator" cap-="bisect" direction-="y"></div>
17 <div is-="separator" cap-="bisect"></div>
18 <span>bisect</span>
19 </div>
20
1
2 body {
3 display: flex;
4 flex-direction: column;
5 gap: 1lh;
6 }
7 .column {
8 display: flex;
9 flex-direction: column;
10 }
11 div[direction-='y'] {
12 height: 2lh;
13 }
14

Start and End Caps

You can specify two values for the cap- attribute to control the start and end of the separator

<div is-="separator" cap-="edge bisect"></div>
<div is-="separator" cap-="default edge"></div>
<div is-="separator" cap-="bisect default"></div>
1
2 <div box-="square" class="column">
3 <div class="column">
4 <span>edge bisect</span>
5 <div is-="separator" cap-="edge bisect"></div>
6 </div>
7 <div class="column">
8 <span>default edge</span>
9 <div is-="separator" cap-="default edge"></div>
10 </div>
11 <div class="column">
12 <span>bisect default</span>
13 <div is-="separator" cap-="bisect default"></div>
14 </div>
15 </div>
16
1
2 body {
3 display: flex;
4 flex-direction: column;
5 gap: 1lh;
6 }
7 .column {
8 display: flex;
9 flex-direction: column;
10 }
11 div[direction-='y'] {
12 height: 2lh;
13 }
14

Reference

Properties

Use the following custom CSS properties to style separators

  • --separator-width: The width of the separator line
  • --separator-color: The color of the separator line
  • --separator-background: The background color of the separator behind the line
1 <p>The quick green dog</p>
2 <div is-="separator"></div>
3 <p>eats the lazy fox</p>
1
2 body {
3 display: flex;
4 flex-direction: column;
5 }
6 div[is-='separator'] {
7 --separator-width: 1px;
8 --separator-color: orange;
9 --separator-background: #444;
10 }
11

Extending

To extend the Separator stylesheet, define a CSS rule on the components layer

@layer components {
    input[type='checkbox'] {
        /* ... */
    }
}

Scope

  • All elements with the is-~="separator" selector
input[type='checkbox'] {
    /* ... */
}
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