diff --git a/doc/src/b2.css b/doc/src/b2.css
new file mode 100644
index 000000000..67110a39d
--- /dev/null
+++ b/doc/src/b2.css
@@ -0,0 +1,24 @@
+.admonitionblock .icon .title {
+	font-size: 2.5em;
+	text-shadow: 1px 1px 2px rgba(0, 0, 0, .5);
+}
+
+.caution .icon .title {
+	color: rgba(192, 51, 0, 1);
+}
+
+.important .icon .title {
+	color: rgba(192, 0, 0, 1);
+}
+
+.note .icon .title {
+	color: rgba(26, 64, 128, 1);
+}
+
+.tip .icon .title {
+	color: rgba(255, 192, 0, 1);
+}
+
+.warning .icon .title {
+	color: rgba(192, 102, 0, 1);
+}
diff --git a/doc/src/standalone.adoc b/doc/src/standalone.adoc
index f8d3f63d1..35cf8a7a8 100644
--- a/doc/src/standalone.adoc
+++ b/doc/src/standalone.adoc
@@ -17,14 +17,7 @@
 ifdef::backend-html5[]
 ++++
 <style>
-.admonitionblock .icon .title {
-font-size: 2.5em;
-text-shadow: 1px 1px 2px rgba(0,0,0,.5); }
-.caution .icon .title { color: rgba(192,51,0,.8); }
-.important .icon .title { color: rgba(192,0,0,.8); }
-.note .icon .title { color: rgba(26,64,128,.8); }
-.tip .icon .title { color: rgba(255,192,0,.8); }
-.warning .icon .title { color: rgba(192,102,0,.8); }
+include::b2.css[]
 </style>
 ++++
 endif::[]