diff --git a/src/assets/dashboard-theme/structure.css b/src/assets/dashboard-theme/structure.css
index 37d3f83..7676852 100644
--- a/src/assets/dashboard-theme/structure.css
+++ b/src/assets/dashboard-theme/structure.css
@@ -195,8 +195,9 @@
   position: fixed;
   background: var(--background-color);
   top: var(--header-height);
+  left: var(--sidebar-width);
+  right: 0;
   z-index: 980;
-  width: calc(100% - var(--sidebar-width) - 180px);
   padding: 0 90px;
   transition-property: width;
   transition: 0.5s;
@@ -207,7 +208,7 @@
 }
 
 .sidebar_mini #page_content_header {
-  width: calc(100vw - var(--sidebar-mini-width) - 180px);
+  left: var(--sidebar-mini-width);
 }
 
 #page_content_inner {
@@ -243,8 +244,16 @@
   padding-left: calc(var(--sidebar-mini-width)/2);
 }
 
-navbar > *, openaire-error > *, openaire-user> user > * {
-  background-color: var(--background-color);
+navbar > *, openaire-error > *, openaire-user> user > *, .fs-modal {
+  background-color: var(--background-color) !important;
+}
+
+.fs-modal > .header {
+  height: calc(var(--header-height) - 20px);
+}
+
+.fs-modal > .content {
+  margin-top: var(--header-height);
 }
 
 .tm-header .uk-navbar-container {