[css-color-4] consistently scaled widths

Author: svgeesus

css-color-4/Overview.bs

@@ -2226,7 +2226,7 @@ Predefined colorspaces: ''srgb'', ''display-p3'', ''a98-rgb'', ''prophoto-rgb'',
 			C is the red, green or blue component.
 
 			<figure>
-				<img src="images/sRGB-prim-sec.svg" style="width: 60vmin"
+				<img src="images/sRGB-prim-sec.svg" style="width: 53.8vmin"
 				alt="diagram of sRGB primaries and secondaries in LCH">
 				<figcaption>Visualization of the sRGB colorspace in LCH. The primaries and secondaries are shown.</figcaption>
 			</figure>
@@ -2300,7 +2300,7 @@ Predefined colorspaces: ''srgb'', ''display-p3'', ''a98-rgb'', ''prophoto-rgb'',
 			</table>
 
 			<figure>
-				<img src="images/a98-prim-sec.svg" style="width: 60vmin"
+				<img src="images/a98-prim-sec.svg" style="width: 66.2vmin"
 				alt="diagram of a98 primaries and secondaries in LCH">
 				<figcaption>Visualization of the a98 colorspace in LCH.
 					The primaries and secondaries are shown
@@ -2370,7 +2370,7 @@ Predefined colorspaces: ''srgb'', ''display-p3'', ''a98-rgb'', ''prophoto-rgb'',
 			The transfer function (1886) for reference Rec.2020 displays is gamma 2.4 [[!Rec.2020]]
 
 			<figure>
-				<img src="images/2020-prim-sec.svg" style="width: 60vmin"
+				<img src="images/2020-prim-sec.svg" style="width: 69.3vmin"
 				alt="diagram of rec2020 primaries and secondaries in LCH">
 				<figcaption>Visualization of the rec2020 colorspace in LCH. The primaries and secondaries are shown
 				(but in sRGB, not in the correct colors).