diff --git a/src/bigblow_theme/css/bigblow.css b/src/bigblow_theme/css/bigblow.css
index 0282348..5e1994e 100644
--- a/src/bigblow_theme/css/bigblow.css
+++ b/src/bigblow_theme/css/bigblow.css
@@ -751,6 +751,10 @@ p.verse {
     cursor: pointer;
 }
 
+.underline {
+  text-decoration:underline
+}
+
 /* This is for the sake of Emacs. */
 /* Local Variables: */
 /* eval: (when (locate-library "rainbow-mode") (require 'rainbow-mode) (rainbow-mode)) */
diff --git a/src/readtheorg_theme/css/readtheorg.css b/src/readtheorg_theme/css/readtheorg.css
index e90b1e3..12e71ad 100644
--- a/src/readtheorg_theme/css/readtheorg.css
+++ b/src/readtheorg_theme/css/readtheorg.css
@@ -1138,3 +1138,7 @@ h2.footnotes{
     text-align: right;
     padding-right: 10pt;
 }
+
+.underline {
+  text-decoration:underline
+}