actual em-dash

Author: svgeesus

css-fonts-3/Fonts.src.html

@@ -522,7 +522,7 @@ <h5 class="no-num no-toc"> <span class="index-def" title="sans-serif, definition
 <p>Glyphs in sans-serif fonts, as the term is used in CSS, are generally
 low contrast (vertical and horizontal stems have the close to the same
 thickness) and have stroke
-endings that are plain -- without any flaring, cross stroke, or other
+endings that are plain — without any flaring, cross stroke, or other
 ornamentation. Sans-serif fonts are typically
 proportionately-spaced. They often have little variation between thick
 and thin strokes, compared to fonts from the 'serif' family. CSS uses