diff --git a/src/styles/layout.css b/src/styles/layout.css
index 0e931f8..fd43171 100644
--- a/src/styles/layout.css
+++ b/src/styles/layout.css
@@ -17,13 +17,22 @@
 .page-scrollable {
   height: 100%;
   overflow-y: auto;
+  overflow-x: hidden;
 }
 
 /* Vertical Lines — utilisées dans Menu.svelte (golden-grid) */
-.vertical-line       { grid-area: auto; }
-.vertical-line-start { grid-area: 1/6  / span 20 / span 1; }
-.vertical-line-center{ grid-area: 1/11 / span 20 / span 1; }
-.vertical-line-end   { grid-area: 1/16 / span 20 / span 1; }
+.vertical-line {
+  grid-area: auto;
+}
+.vertical-line-start {
+  grid-area: 1/6 / span 20 / span 1;
+}
+.vertical-line-center {
+  grid-area: 1/11 / span 20 / span 1;
+}
+.vertical-line-end {
+  grid-area: 1/16 / span 20 / span 1;
+}
 
 .vertical-line,
 .vertical-line-start,