How to get rid of these rounded corners?

[lchy885]

Hi all

Please take a look at the following attachments,

I don't seem to find a way to get rid of these rounded corners: search box & reply box,
can't find any related radius in Style Variable Editor (Style & Templates > Style Manager > Style Variable Editor)
I have already set all radius I could find to 0.

any idea?

https://vbulletin.org/forum/attachment.php?attachmentid=157369&d=1551719716
https://vbulletin.org/forum/attachment.php?attachmentid=157370&d=1551719716

[Seven Skins]

This should turn everything square...

* {
border-radius: 0px !important;
-moz-border-radius: 0px !important;
-webkit-border-radius: 0px !important;
}

[lchy885]

This should turn everything square...

* {
border-radius: 0px !important;
-moz-border-radius: 0px !important;
-webkit-border-radius: 0px !important;
}

Thanks:)