The border shorthand sets three border properties at once: line width, line style, and line color. A single declaration applies to all four sides. The shorthand also resets border-image to its initial values..box {
border: 1px solid black;
}.box {
border: thick double hsl(220 50% 40%);
}min:0max:9999step:1units:px | em | rem | pt | vw | vh | vmin | vmaxhairlineThinnest line the device can render (new in L4).thinThin line width.mediumMedium line width (default).thickThick line width.noneNo border (default). Computed width is 0.hiddenHidden border — same as none, affects table border-collapse.dottedDotted line.dashedDashed line.solidSolid line.doubleDouble line.groove3D grooved effect.ridge3D ridged effect.insetBorder appears inset.outsetBorder appears outset.currentColorCurrent color value (default).transparentFully transparent color.rgb()RGB color function.hsl()HSL color function.hwb()HWB color function.lab()CIE Lab color function.lch()CIE LCH color function.oklab()Oklab color function.oklch()Oklch color function.color()Generic color function for custom color spaces.light-dark()Selects between two color values per color-scheme.CSS Borders Module Level 4Working Draft<line-width> <line-style> <color>W3CMDNCSSShow all codeEdit CSS onlineThe plugin that remembers hundreds of CSS items for youEvery CSS property — in a live demonstrationThe bilingual CSS referencedefinitionexamplessyntaxmodulespecificationvalue typessourcesvisual demonstrationpreviousnext
