3 files changed, 3 insertions, 2 deletions
diff --git a/theme/stylesheets/book/body.less b/theme/stylesheets/book/body.less
index bf04ec2..12986a8 100755
--- a/theme/stylesheets/book/body.less
+++ b/theme/stylesheets/book/body.less
@@ -84,7 +84,7 @@
     }
 
     &.with-summary {
-        @media (min-width: 800px) {
+        @media (min-width: @sidebar-breakpoint) {
             .book-body {
                 left: 250px;
             }
diff --git a/theme/stylesheets/book/summary.less b/theme/stylesheets/book/summary.less
index e3429bb..7fb8ee6 100755
--- a/theme/stylesheets/book/summary.less
+++ b/theme/stylesheets/book/summary.less
@@ -110,7 +110,7 @@
             }
         }
 
-        @media (max-width: 600px) {
+        @media (max-width: @sidebar-breakpoint) {
             width: 100%;
             bottom: 0px;
             left: -100%;
diff --git a/theme/stylesheets/variables.less b/theme/stylesheets/variables.less
index 36fc195..fda6b13 100755
--- a/theme/stylesheets/variables.less
+++ b/theme/stylesheets/variables.less
@@ -17,6 +17,7 @@
 
 // Sidebar
 @sidebar-width:                       250px;
+@sidebar-breakpoint:                  600px;
 @sidebar-color:                       hsl(207, 15%, 80%);
 @sidebar-background:                  hsl(207, 15%, 95%);