diff --git a/src/Gui/Stylesheets/Dark-blue.qss b/src/Gui/Stylesheets/Dark-blue.qss
index e24d193a1d..bca338d694 100644
--- a/src/Gui/Stylesheets/Dark-blue.qss
+++ b/src/Gui/Stylesheets/Dark-blue.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #1e1e1e
         #3c3c3c
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: https://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
diff --git a/src/Gui/Stylesheets/Dark-green.qss b/src/Gui/Stylesheets/Dark-green.qss
index c1df5ecf96..fc755eec0d 100644
--- a/src/Gui/Stylesheets/Dark-green.qss
+++ b/src/Gui/Stylesheets/Dark-green.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #1e1e1e
         #3c3c3c
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: https://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
diff --git a/src/Gui/Stylesheets/Dark-orange.qss b/src/Gui/Stylesheets/Dark-orange.qss
index 735801b1f6..eb1fd0cde1 100644
--- a/src/Gui/Stylesheets/Dark-orange.qss
+++ b/src/Gui/Stylesheets/Dark-orange.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #1e1e1e
         #3c3c3c
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: https://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
diff --git a/src/Gui/Stylesheets/Darker-blue.qss b/src/Gui/Stylesheets/Darker-blue.qss
index 3e9561559f..f6e702263d 100644
--- a/src/Gui/Stylesheets/Darker-blue.qss
+++ b/src/Gui/Stylesheets/Darker-blue.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #1e1e1e
         #2a2a2a = background
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: https://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
diff --git a/src/Gui/Stylesheets/Darker-green.qss b/src/Gui/Stylesheets/Darker-green.qss
index ced1517762..b3a57c0411 100644
--- a/src/Gui/Stylesheets/Darker-green.qss
+++ b/src/Gui/Stylesheets/Darker-green.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #1e1e1e
         #2a2a2a = background
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: https://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
diff --git a/src/Gui/Stylesheets/Darker-orange.qss b/src/Gui/Stylesheets/Darker-orange.qss
index 55c5c31d28..5db4aa63b7 100644
--- a/src/Gui/Stylesheets/Darker-orange.qss
+++ b/src/Gui/Stylesheets/Darker-orange.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #1e1e1e
         #2a2a2a = background
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
diff --git a/src/Gui/Stylesheets/Light-blue.qss b/src/Gui/Stylesheets/Light-blue.qss
index 0d9a52b0e1..ec5cd14a01 100644
--- a/src/Gui/Stylesheets/Light-blue.qss
+++ b/src/Gui/Stylesheets/Light-blue.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #505050
         #6e6e6e
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: https://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
@@ -93,7 +93,7 @@ QToolBar  {
 }
 
 QMdiArea {
-        background-image: url(qss:images_dark-light/background_freecad_dark.svg);
+    background-image: url(qss:images_dark-light/background_freecad_dark.svg);
     background-position: center center;
     background-repeat: no-repeat;
 }
diff --git a/src/Gui/Stylesheets/Light-green.qss b/src/Gui/Stylesheets/Light-green.qss
index 163c1c9602..a95390efe0 100644
--- a/src/Gui/Stylesheets/Light-green.qss
+++ b/src/Gui/Stylesheets/Light-green.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #505050
         #6e6e6e
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: https://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
@@ -93,7 +93,7 @@ QToolBar  {
 }
 
 QMdiArea {
-        background-image: url(qss:images_dark-light/background_freecad_dark.svg);
+    background-image: url(qss:images_dark-light/background_freecad_dark.svg);
     background-position: center center;
     background-repeat: no-repeat;
 }
diff --git a/src/Gui/Stylesheets/Light-orange.qss b/src/Gui/Stylesheets/Light-orange.qss
index 14dc808cf3..8be931acf8 100644
--- a/src/Gui/Stylesheets/Light-orange.qss
+++ b/src/Gui/Stylesheets/Light-orange.qss
@@ -2,7 +2,7 @@
 ABOUT
 ============================================================================================================
 version 2.20
-Qt theme (stylesheet) specially developed for FreeCAD (http://www.freecadweb.org/).
+Qt theme (stylesheet) specially developed for FreeCAD (https://www.freecadweb.org/).
 It might work with other software that uses Qt styling.
 
 
@@ -25,7 +25,7 @@ INSTALLATION
 CUSTOMIZATION
 ============================================================================================================
 If you would like to change the overall look/style of the theme, just find and replace following colors in the whole file:
-    BACKGROUND (darker to ligher)
+    BACKGROUND (darker to lighter)
         black
         #505050
         #6e6e6e
@@ -57,7 +57,7 @@ If you would like to change the overall look/style of the theme, just find and r
 
 KNOWN BUGS and TO DO
 ============================================================================================================
-    - please, follow the link to get updated information: http://forum.freecadweb.org/viewtopic.php?f=10&t=12417
+- please, follow the link to get updated information: https://forum.freecadweb.org/viewtopic.php?f=10&t=12417
 */
 
 
@@ -93,7 +93,7 @@ QToolBar  {
 }
 
 QMdiArea {
-        background-image: url(qss:images_dark-light/background_freecad_dark.svg);
+    background-image: url(qss:images_dark-light/background_freecad_dark.svg);
     background-position: center center;
     background-repeat: no-repeat;
 }