html - Inherit CSS from preceding tr -


I have to change the background color of my table rows. But I have some lines (class B) which are sub-sections of classes. Basically they show that they are down in the top row. I want those lines to be in the form of a single side color as the original line in the form of their next "A" alternative back

The table is being dynamically created, so it should be flexible.

I have tried every CSS selector, but I do not know how to remove "A" background in "B"? Can anyone tell me that this is also possible or I have to reorganize HTML.

I am fine with using jQuery or Javascript to fix this.

Simple HTML: 

  & lt; Table & gt; & Lt; Tr square = "one" & gt; & Lt; Td> Asdf & lt; / Td> & Lt; / Tr & gt; & Lt; Tr square = "a" & gt; & Lt; Td> Asdf & lt; / Td> & Lt; / Tr & gt; & Lt; Tr class = "b" & gt; & Lt; Td> Asdf & lt; / Td> & Lt; / Tr & gt; & Lt; Tr square = "a" & gt; & Lt; Td> Asdf & lt; / Td> & Lt; / Tr & gt; & Lt; Tr square = "a" & gt; & Lt; Td> Asdf & lt; / Td> & Lt; / Tr & gt; & Lt; Tr class = "b" & gt; & Lt; Td> Asdf & lt; / Td> & Lt; / Tr & gt; & Lt; Tr class = "b" & gt; & Lt; Td> Asdf & lt; / Td> & Lt; / Tr & gt; & Lt; Tr square = "a" & gt; & Lt; Td> Asdf & lt; / Td> & Lt; / Tr & gt; & Lt; / Table & gt;

CSS: 

  .a: nth-of-type (even) {background color: #DDD; } .b td {padding-left: 25px; }

Bella:


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