how light a font color in a line normal font in html code example

Example 1: how to bold text css inline

<p style="font-weight:bold">Hey there</p>

Example 2: font. to be thinner css

font-weight: 200; /*100 200 300 400 500 600 700 800 900 
					Defines from thin to thick characters. 
					400 is the same as normal, 
					and 700 is the same as bold*/