2.1.153 [HTML5:2014] Section 10.3.12 The hr element

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V0353: When the align attribute is set, the default styles do not set the margin properties

The specification states:

 10.3.9 Tables
     ...
     table[align=center i] { margin-left: auto; margin-right: auto; }
  
 10.3.12 The hr element
     ...
     hr[align=left] { margin-left: 0; margin-right: auto; }
     hr[align=right] { margin-left: auto; margin-right: 0; }
     hr[align=center] { margin-left: auto; margin-right: auto; }

All document modes (All versions)

When the align attribute is set, the default styles do not set the margin properties.

V0352: The color property for the hr element is not set to gray in the default styles

The specification states:

 10.3.12 The hr element
     ...
     hr { color: gray; border-style: inset; border-width: 1px; margin: 0.5em auto; }

All document modes (All versions)

The color property for the hr element is not set to gray in the default styles. Instead the color used is rgb(0, 0, 0), which is equivalent to black.