Consider the CSS to fix all (known) popup windows:
#message-index #footer,
#message-discussion #footer,
#message-history #footer,
#mod-glossary-showentry #footer,
#mod-glossary-showentry #header,
#mod-glossary-showentry .navbar,
#help #footer {
display:none;
}
#message-index #page,
#message-user #page,
#message-history #page,
#mod-glossary-showentry #page,
#help #page {
width:auto;
}
#message-user #page {
margin:0;
}
#message-user #content {
padding:0;
}
body#help,
#help #content,
body#message-index,
#message-index #content,
#message-user #content,
body#message-user,
body#message-send,
body#message-messages,
body#message-discussion,
#message-discussion #content,
#message-history #content,
body#message-history,
body#mod-glossary-showentry,
#mod-glossary-showentry #content {
background:none;
}
You're welcome, by the way! And, I promise that I have missed one or two items that need individual attention.
Would it be possible to add a single class that appears in all popups so that this can be styled all at once?
I don't know anything about the programming side, so I'm really asking.