Generieren pure CSS triangles, arrows, and directional indicators with a live visual editor. Choose from 12 preset directions, customize size and color, and copy production-ready CSS instantly. No images needed — 100% client-seitig.
The CSS-Dreiecks-Generator creates pure CSS triangles and arrows using the border technique — no images, no SVG, no external dependencies. CSS triangles work by setting three borders to transparent and one to a solid color, creating the illusion of a triangle. This technique has been a web development staple since the early days of CSS and remains the most lightweight way to add directional indicators, tooltips, dropdown arrows, and decorative elements to any webpage. Alle processing happens in Ihrem Durchsuchenr — keine Daten is sent anywhere.
CSS triangles are created using borders. Wann an element has zero width and height but thick borders, the borders meet at 45-degree angles. By making three borders transparent and one solid color, you get a triangle pointing in the direction of the solid border. This is a classic CSS trick that requires zero external resources.
Absolut. CSS triangles are supported in all modern browsers and have been for over a decade. They are commonly used for dropdown arrows, tooltip pointers, speech bubble tails, step indicators, and decorative elements on major websites.
Triangle presets create pure triangles with zero width/height. Arrow presets add a rectangular base to the triangle, creating an arrow shape that is useful for navigation indicators, back-to-top buttons, and directional pointers.
A true equilateral triangle in CSS requires a specific border-width ratio because the visible triangle is actually a 45-degree isosceles right triangle formed by the border corners. To approximate an equilateral triangle, the height needs to be about 86.6% of the base width (√3/2 ratio), which this tool calculates automatically for you.