diff --git a/apps/files_sharing/css/public.scss b/apps/files_sharing/css/public.scss
index 50dfa3e9c57..c524283317f 100644
--- a/apps/files_sharing/css/public.scss
+++ b/apps/files_sharing/css/public.scss
@@ -164,7 +164,6 @@ thead {
 	position: relative;
 	font-weight: 300;
 	font-size: 11px;
-	opacity: .57;
 	overflow: hidden;
 	text-overflow: ellipsis;
 }
diff --git a/core/css/apps.scss b/core/css/apps.scss
index f294f8aa512..a9e5a41910f 100644
--- a/core/css/apps.scss
+++ b/core/css/apps.scss
@@ -18,16 +18,20 @@
 
 /* BASE STYLING ------------------------------------------------------------ */
 
+h2,
+h3,
+h4 {
+	font-weight: 600;
+}
+
 h2 {
 	font-size: 20px;
-	font-weight: 300;
 	margin-bottom: 12px;
 	line-height: 140%;
 }
 
 h3 {
 	font-size: 15px;
-	font-weight: 300;
 	margin: 12px 0;
 }
 
@@ -842,7 +846,7 @@ $popovericon-size: 16px;
 		// Required right-distance is half menu icon size + right padding
 		// = 16px/2 + 14px = 22px
 		// popover right margin is 5px, arrow width is 9px to center and border is 1px
-		// 22px - 9px - 5px - 1px = 7px 
+		// 22px - 9px - 5px - 1px = 7px
 		right: 7px;
 		/* change this to adjust the arrow position */
 		border: solid transparent;
diff --git a/core/css/guest.css b/core/css/guest.css
index fc926688c44..1d5b266eda3 100644
--- a/core/css/guest.css
+++ b/core/css/guest.css
@@ -48,15 +48,19 @@ em {
 }
 
 /* heading styles */
+h2,
+h3,
+h4 {
+	font-weight: 600;
+}
+
 h2 {
 	font-size: 20px;
-	font-weight: 300;
 	margin-bottom: 12px;
 	line-height: 140%;
 }
 h3 {
 	font-size: 15px;
-	font-weight: 300;
 	margin: 12px 0;
 }
 
diff --git a/core/css/header.scss b/core/css/header.scss
index 4c0f05f9cc6..1356ef42663 100644
--- a/core/css/header.scss
+++ b/core/css/header.scss
@@ -213,7 +213,7 @@
 .header-appname {
 	color: var(--color-primary-text);
 	font-size: 16px;
-	font-weight: 300;
+	font-weight: 600;
 	margin: 0;
 	padding: 0;
 	padding-right: 5px;
@@ -357,12 +357,12 @@ nav[role='navigation'] {
 		&:active {
 			color: var(--color-primary-text);
 
-			#expandDisplayName, 
+			#expandDisplayName,
 			.avatardiv{
 				border-radius: 50%;
 				border: 2px solid var(--color-primary-text);
 				margin: -2px;
-			} 
+			}
 			.avatardiv{
 				background-color: var(--color-primary-text);
 			}