diff --git a/.config/cspell.json b/.config/cspell.json
index ef3508b6..46d53445 100644
--- a/.config/cspell.json
+++ b/.config/cspell.json
@@ -13,6 +13,151 @@
     "borderless",
     "colorjs",
     "oklab",
-    "prebuild"
+    "prebuild",
+    "aliceblue",
+    "antiquewhite",
+    "aqua",
+    "aquamarine",
+    "azure",
+    "beige",
+    "bisque",
+    "black",
+    "blanchedalmond",
+    "blue",
+    "blueviolet",
+    "brown",
+    "burlywood",
+    "cadetblue",
+    "chartreuse",
+    "chocolate",
+    "coral",
+    "cornflowerblue",
+    "cornsilk",
+    "crimson",
+    "cyan",
+    "darkblue",
+    "darkcyan",
+    "darkgoldenrod",
+    "darkgray",
+    "darkgreen",
+    "darkgrey",
+    "darkkhaki",
+    "darkmagenta",
+    "darkolivegreen",
+    "darkorange",
+    "darkorchid",
+    "darkred",
+    "darksalmon",
+    "darkseagreen",
+    "darkslateblue",
+    "darkslategrey",
+    "darkturquoise",
+    "darkviolet",
+    "deeppink",
+    "deepskyblue",
+    "dimgray",
+    "dimgrey",
+    "dodgerblue",
+    "firebrick",
+    "floralwhite",
+    "forestgreen",
+    "fuchsia",
+    "gainsboro",
+    "ghostwhite",
+    "gold",
+    "goldenrod",
+    "gray",
+    "green",
+    "greenyellow",
+    "grey",
+    "honeydew",
+    "hotpink",
+    "indianred",
+    "indigo",
+    "ivory",
+    "khaki",
+    "lavender",
+    "lavenderblush",
+    "lawngreen",
+    "lemonchiffon",
+    "lightblue",
+    "lightcoral",
+    "lightcyan",
+    "lightgoldenrodyellow",
+    "lightgray",
+    "lightgreen",
+    "lightgrey",
+    "lightpink",
+    "lightsalmon",
+    "lightseagreen",
+    "lightskyblue",
+    "lightslategrey",
+    "lightsteelblue",
+    "lightyellow",
+    "lime",
+    "limegreen",
+    "linen",
+    "magenta",
+    "maroon",
+    "mediumaquamarine",
+    "mediumblue",
+    "mediumorchid",
+    "mediumpurple",
+    "mediumseagreen",
+    "mediumslateblue",
+    "mediumspringgreen",
+    "mediumturquoise",
+    "mediumvioletred",
+    "midnightblue",
+    "mintcream",
+    "mistyrose",
+    "moccasin",
+    "navajowhite",
+    "navy",
+    "oldlace",
+    "olive",
+    "olivedrab",
+    "orange",
+    "orangered",
+    "orchid",
+    "palegoldenrod",
+    "palegreen",
+    "paleturquoise",
+    "palevioletred",
+    "papayawhip",
+    "peachpuff",
+    "peru",
+    "pink",
+    "plum",
+    "powderblue",
+    "purple",
+    "rebeccapurple",
+    "red",
+    "rosybrown",
+    "royalblue",
+    "saddlebrown",
+    "salmon",
+    "sandybrown",
+    "seagreen",
+    "seashell",
+    "sienna",
+    "silver",
+    "skyblue",
+    "slateblue",
+    "slategray",
+    "snow",
+    "springgreen",
+    "steelblue",
+    "tan",
+    "teal",
+    "thistle",
+    "tomato",
+    "turquoise",
+    "violet",
+    "wheat",
+    "white",
+    "whitesmoke",
+    "yellow",
+    "yellowgreen",
   ]
-}
+}
\ No newline at end of file
diff --git a/src/compiler/declarations.ts b/src/compiler/declarations.ts
index 457f6281..a5b9423f 100644
--- a/src/compiler/declarations.ts
+++ b/src/compiler/declarations.ts
@@ -1,4 +1,4 @@
-// cSpell:ignore rcap,vmin,svmin,lvmin,dvmin,cqmin,vmax,svmax,lvmax,dvmax,cqmax,currentcolor,oklab,oklch,prophoto
+// cSpell:ignore rcap,vmin,svmin,lvmin,dvmin,cqmin,vmax,svmax,lvmax,dvmax,cqmax,currentcolor,oklab,oklch,prophoto,squircle,oldstyle,nums
 
 import Color from "colorjs.io";
 import type {
@@ -1000,6 +1000,8 @@ export function parseCustomDeclaration(
       property,
       parseUnparsed(declaration.value.value, builder, property),
     );
+  } else if (property === "corner-shape") {
+    parseCornerShape(declaration.value, builder);
   } else if (
     validProperties.has(property) ||
     property.startsWith("--") ||
@@ -3091,6 +3093,19 @@ function parseObjectPosition(
   ]);
 }
 
+function parseCornerShape(
+  declaration: CustomProperty,
+  builder: StylesheetBuilder,
+) {
+  const shape = parseUnparsed(declaration.value, builder, "corner-shape");
+
+  if (shape === "round") {
+    builder.addDescriptor("borderCurve", "circular");
+  } else if (shape === "squircle") {
+    builder.addDescriptor("borderCurve", "continuous");
+  }
+}
+
 function parseVisibility(
   declaration: DeclarationType<"visibility">,
   builder: StylesheetBuilder,