Fixed The Very Old CSS Problem of the black bar in the bottom not fully

reaching the right side of the screen on pages where id='content' =>
class='full'.

Added useful text. Changed other text.

site/writings/css-failings.org

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+#+title: CSS failings
+#&summary
+A travel through my past Cascading Style Sheets mistakes
+#&
+#+license: bysa
+
+* CSS failings
+
+Once, I did not know about Cascading Style Sheets, or CSS. I knew HTML... What
+else would there be to know?
+
+Oh, and I knew the =font= tag. It's safe to say my websites were not optimal.
+
+
+** px in font-size
+
+First, my apologies for not using the em&emph unit in font-size attributes. For
+years I have consistently used the px&emph unit when setting the sizes of
+fonts. I recently found out how wrong this is, how an incredibly arrogant
+offense to the universe it is, and I have begun correcting this mistake.
+
+Why is it wrong, you ask? I once thought about that, because I had read
+somewhere that it was best to use em&emph. But I didn't fully understand the
+unit, and I certainly didn't want my precious design to be viewed differently
+by different users! I wanted to force every user to view the exact same render
+of my pages. This was not ill-meant; I think it originated because of general
+browser incompabilities and was then taken to an unfortunate extreme.
+
+Essentially, it's wrong because it {forces the user to view the text in a
+specific size}&emph.
+
+If I had read that earlier on, I wouldn't have made so many px-based CSS's.