[css-color-4][editorial] HTML validity

Author: svgeesus

css-color-4/Overview.bs

@@ -3974,7 +3974,13 @@ The Predefined sRGB Color Space: the ''sRGB'' keyword</h3>
 			It has the following characteristics:
 
 			<table id="prr-color-srgb">
-				<thead><td></td><td>x</td><td>y</td></thead>
+				<thead>
+					<tr>
+						<td></td>
+						<td>x</td>
+						<td>y</td>
+					</tr>
+				</thead>
 				<tr><th>Red chromaticity</th><td>0.640</td><td>0.330</td></tr>
 				<tr><th>Green chromaticity</th><td>0.300</td><td>0.600</td></tr>
 				<tr><th>Blue chromaticity</th><td>0.150</td><td>0.060</td></tr>
@@ -4041,7 +4047,13 @@ The Predefined Linear-Light sRGB Color Space: the ''srgb-linear'' keyword</h3>
 				It has the following characteristics:
 
 				<table id="prr-color-srgb-linear">
-					<thead><td></td><td>x</td><td>y</td></thead>
+					<thead>
+					<tr>
+						<td></td>
+						<td>x</td>
+						<td>y</td>
+					</tr>
+				</thead>
 					<tr><th>Red chromaticity</th><td>0.640</td><td>0.330</td></tr>
 					<tr><th>Green chromaticity</th><td>0.300</td><td>0.600</td></tr>
 					<tr><th>Blue chromaticity</th><td>0.150</td><td>0.060</td></tr>
@@ -4108,7 +4120,13 @@ The Predefined Display P3 Color Space: the ''display-p3'' keyword</h3>
 			It has the following characteristics:
 
 			<table id="prr-color-display-p3">
-				<thead><td></td><td>x</td><td>y</td></thead>
+				<thead>
+					<tr>
+						<td></td>
+						<td>x</td>
+						<td>y</td>
+					</tr>
+				</thead>
 				<tr><th>Red chromaticity</th><td>0.680</td><td>0.320</td></tr>
 				<tr><th>Green chromaticity</th><td>0.265</td><td>0.690</td></tr>
 				<tr><th>Blue chromaticity</th><td>0.150</td><td>0.060</td></tr>
@@ -4176,7 +4194,13 @@ The Predefined Linear-Light Display P3 Color Space: the ''display-p3-linear'' ke
 	It has the following characteristics:
 
 	<table id="prr-color-display-p3-linear">
-		<thead><td></td><td>x</td><td>y</td></thead>
+		<thead>
+					<tr>
+						<td></td>
+						<td>x</td>
+						<td>y</td>
+					</tr>
+				</thead>
 		<tr><th>Red chromaticity</th><td>0.680</td><td>0.320</td></tr>
 		<tr><th>Green chromaticity</th><td>0.265</td><td>0.690</td></tr>
 		<tr><th>Blue chromaticity</th><td>0.150</td><td>0.060</td></tr>
@@ -4238,7 +4262,13 @@ The Predefined A98 RGB Color Space: the ''a98-rgb'' keyword</h3>
 			It has the following characteristics:
 
 			<table id="prr-color-a98-rgb">
-				<thead><td></td><td>x</td><td>y</td></thead>
+				<thead>
+					<tr>
+						<td></td>
+						<td>x</td>
+						<td>y</td>
+					</tr>
+				</thead>
 				<tr><th>Red chromaticity</th><td>0.6400</td><td>0.3300</td></tr>
 				<tr><th>Green chromaticity</th><td>0.2100</td><td>0.7100</td></tr>
 				<tr><th>Blue chromaticity</th><td>0.1500</td><td>0.0600</td></tr>
@@ -4318,7 +4348,13 @@ The Predefined ProPhoto RGB Color Space: the ''prophoto-rgb'' keyword</h3>
 				It has the following characteristics:
 
 				<table id="prr-color-prophoto-rgb">
-					<thead><td></td><td>x</td><td>y</td></thead>
+					<thead>
+					<tr>
+						<td></td>
+						<td>x</td>
+						<td>y</td>
+					</tr>
+				</thead>
 					<tr><th>Red chromaticity</th><td>0.734699</td><td>0.265301</td></tr>
 					<tr><th>Green chromaticity</th><td>0.159597</td><td>0.840403</td></tr>
 					<tr><th>Blue chromaticity</th><td>0.036598</td><td>0.000105</td></tr>
@@ -4402,7 +4438,13 @@ The Predefined ITU-R BT.2020-2 Color Space: the ''rec2020'' keyword</h3>
 			It has the following characteristics:
 
 			<table id="prr-color-rec2020">
-				<thead><td></td><td>x</td><td>y</td></thead>
+				<thead>
+					<tr>
+						<td></td>
+						<td>x</td>
+						<td>y</td>
+					</tr>
+				</thead>
 				<tr><th>Red chromaticity</th><td>0.708</td><td>0.292</td></tr>
 				<tr><th>Green chromaticity</th><td>0.170</td><td>0.797</td></tr>
 				<tr><th>Blue chromaticity</th><td>0.131</td><td>0.046</td></tr>