check.css improvement

css/check.css

@@ -1,9 +1,13 @@
 @charset "UTF-8";
 
 i.icon.check {
+	--width: 3em;
+	--height: 1.5em;
+	--up: 10px;
+	--down: 6px;
 	position: relative;
-	width: 22px;
-	height: 22px;
+	width: var(--width);
+	height: var(--height);
 	box-sizing: border-box;
 	display: block;
 	border-radius: 100px;
@@ -12,10 +16,10 @@ i.icon.check {
 	&::after {
 		position: absolute;
 		content: "";
-		top: -1px;
-		left: 3px;
-		width: 6px;
-		height: 10px;
+		top: -0.3em;
+		left: 0.4em;
+		width: var(--down);
+		height: var(--up);
 		box-sizing: border-box;
 		display: block;
 		border-width: 0 2px 2px 0;

css/close.css

@@ -1,31 +1,36 @@
 @charset "UTF-8";
 
 i.icon.close {
-	--diameter: 22px;
-	box-sizing: border-box;
+	--diameter: 2em;
+	--size: 1.5em;
 	position: relative;
-	display: block;
 	width: var(--diameter);
 	height: var(--diameter);
-	border: 2px solid transparent;
-	border-radius: 40px;
-}
-
-i.icon.close::after,
-i.icon.close::before {
-	content: "";
-	display: block;
 	box-sizing: border-box;
-	position: absolute;
-	width: 16px;
-	height: 2px;
-	background: currentColor;
-	transform: rotate(45deg);
-	border-radius: 5px;
-	top: 8px;
-	left: 1px;
+	display: block;
+	border-radius: 40px;
+	border: 0.2em solid transparent;
+
+	&:is(.small) {
+		--size: 1.2em;
 	}
 
-i.icon.close::after {
+	&::after,
+	&::before {
+		top: 0.7em;
+		left: 0.2em;
+		position: absolute;
+		content: "";
+		width: var(--size, 1.5em);
+		height: 2px;
+		box-sizing: border-box;
+		display: block;
+		border-radius: 5px;
+		background-color: currentColor;
+		transform: rotate(45deg);
+	}
+
+	&::after {
 		transform: rotate(-45deg);
 	}
+}