diff --git a/assets/sass/_theme/_configuration.sass b/assets/sass/_theme/_configuration.sass
index cbe5668331d62c1e169288bbeeaae9c3c36beeb1..8dd0f422e14aa500dd7c0c07b5a4e11dcfd3d87e 100644
--- a/assets/sass/_theme/_configuration.sass
+++ b/assets/sass/_theme/_configuration.sass
@@ -172,6 +172,7 @@ $header-logo-height-desktop: $header-logo-height !default
 $header-height: 99px !default
 $header-height-desktop: 74px !default
 $header-sticky-invert-logo: false !default
+$header-border-bottom-width: 1px !default
 
 // Navs
 $body-overlay-color: rgba(0, 0, 0, 0.3) !default
diff --git a/assets/sass/_theme/design-system/header.sass b/assets/sass/_theme/design-system/header.sass
index c5770e2aeea36059e2caa5a5062aef7836d6a3fe..aad8710cdde75cb148d44e05b13da87683c2eb38 100644
--- a/assets/sass/_theme/design-system/header.sass
+++ b/assets/sass/_theme/design-system/header.sass
@@ -1,6 +1,6 @@
 header#document-header
     background: $header-background
-    border-bottom: 1px solid $color-border
+    border-bottom: $header-border-bottom-width solid $color-border
     color: $header-color
     position: fixed
     left: 0