A little more buffer

Author: facelessuser

css-color-4/Overview.bs

@@ -6135,7 +6135,7 @@ Sample Pseudocode for the Ray Trace Gamut Mapping</h4>
 				<li>let |d| be |b| - |a|</li>
 				<li>let |direction|<i>[i]</i> be |d|</li>
 				<!--  Non parallel cases -->
-				<li>if abs(|d|) < 1E-15
+				<li>if abs(|d|) < 1E-12
 					<ul>
 						<li>let |inv_d| be 1 / |d|</li>
 						<li>let |t1| be (|bmin|<i>[i]</i> - |a|) * |inv_d|</li>