[opt-viewer] Invalid style value `.centered.margin-left: left` in `style.css`

[eirnym]

Hi, thank you for a great tool.

I found that there's an invalid style definition margin-left in the .centered class in llvm/tools/opt-viewer/style.css file. In the file is written margin-left: left, while it's an undefined value according to MDN documentation. Could you please. to fix the style to make it error-free.

I don't know what value was meant to be there: 0px, auto or maybe someone just misread documentation, as left is defined, but not for this property and not for this usage.

based on class name alone, I'd say, that the proper value would be auto.

[frederick-vs-ja]

You mentioned this line, right?

llvm-project/llvm/tools/opt-viewer/style.css

Line 32 in 21b607a

margin-left: left;

[eirnym]

correct, this is the only css error I see

[frederick-vs-ja]

Thanks! I slightly edited the issue title and description for clarity.

[eirnym]

FYI: There's few files with these contents