diff --git a/documentation/bsp-guide/style.css b/documentation/bsp-guide/style.css
index 9db070f68a..28cf7c7a26 100644
--- a/documentation/bsp-guide/style.css
+++ b/documentation/bsp-guide/style.css
@@ -969,3 +969,12 @@ table {
    color: #333;
 }
 
+/* Changes the announcement text */
+.tip h3,
+.warning h3,
+.caution h3,
+.note h3 {
+   font-size:large;
+   color: #00557D;
+}
+
diff --git a/documentation/dev-manual/style.css b/documentation/dev-manual/style.css
index b512dd2dcb..67184972e1 100644
--- a/documentation/dev-manual/style.css
+++ b/documentation/dev-manual/style.css
@@ -968,3 +968,12 @@ table {
    color: #333;
 }
 
+/* Changes the announcement text */
+.tip h3,
+.warning h3,
+.caution h3,
+.note h3 {
+   font-size:large;
+   color: #00557D;
+}
+
diff --git a/documentation/kernel-manual/style.css b/documentation/kernel-manual/style.css
index 51d968681f..ab507a1f68 100644
--- a/documentation/kernel-manual/style.css
+++ b/documentation/kernel-manual/style.css
@@ -968,3 +968,12 @@ table {
    color: #333;
 }
 
+/* Changes the announcement text */
+.tip h3,
+.warning h3,
+.caution h3,
+.note h3 {
+   font-size:large;
+   color: #00557D;
+}
+
diff --git a/documentation/poky-ref-manual/style.css b/documentation/poky-ref-manual/style.css
index c4c337adc1..2eefe0b988 100644
--- a/documentation/poky-ref-manual/style.css
+++ b/documentation/poky-ref-manual/style.css
@@ -968,3 +968,12 @@ table {
    color: #333;
 }
 
+/* Changes the announcement text */
+.tip h3,
+.warning h3,
+.caution h3,
+.note h3 {
+   font-size:large;
+   color: #00557D;
+}
+
diff --git a/documentation/yocto-project-qs/style.css b/documentation/yocto-project-qs/style.css
index 1ddfd36114..66283950c0 100644
--- a/documentation/yocto-project-qs/style.css
+++ b/documentation/yocto-project-qs/style.css
@@ -968,3 +968,12 @@ table {
    color: #333;
 }
 
+/* Changes the announcement text */
+.tip h3,
+.warning h3,
+.caution h3,
+.note h3 {
+   font-size:large;
+   color: #00557D;
+}
+