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CSS Triangle Generator

Generate directional CSS triangles for tooltips, pointers, and UI arrows.

Base Width60px

Height34px

Color

PreviewUp

OutputCSS

width: 0;
height: 0;
border-left: 30px solid transparent;
border-right: 30px solid transparent;
border-bottom: 34px solid #22d3ee;

CSS Triangle Generator: complete usage guide

Generate directional CSS triangles for tooltips, pointers, badges, and navigation cues using border-based shape techniques.

It outputs triangle CSS using transparent borders and directional color borders.

It supports `up`, `down`, `left`, and `right` orientations with width and height controls.

It provides a live preview so arrow direction and scale can be confirmed quickly.

It exports reusable snippets for dropdowns, callouts, and pointer UI components.

Direction

right

Geometry

base width 70px, height 40px

Color

#38bdf8

Right triangle CSS

border-top: 35px solid transparent; border-bottom: 35px solid transparent; border-left: 40px solid #38bdf8;

Up triangle CSS

border-left: 30px solid transparent; border-right: 30px solid transparent; border-bottom: 34px solid #22d3ee;

Integration note

Use pseudo-elements to attach triangles to existing UI blocks.

Triangle appears distorted

Balance base width and height values for intended proportions.

Direction points the wrong way

Verify selected orientation before copying the snippet.

Color edge shows antialias artifacts

Try even pixel values and inspect at target zoom levels.

Positioning around tooltip is off

Combine generated shape with explicit absolute positioning rules.

Unexpected layout shift in containers

Keep triangle element width/height at zero as generated.

Start with a minimal input for CSS Triangle Generator and verify baseline behavior first.
Make assumptions explicit: encoding, delimiter strategy, and timezone.
Change one variable at a time and compare output diffs.
Keep one verified output snapshot as a team reference.

Confirm CSS Triangle Generator output is deterministic across repeated runs with identical input.
Check boundary inputs (empty values, long fields, invalid characters).
Remove sensitive data before sharing output externally.
Verify final rendering on both desktop and mobile viewports.