diff --git a/frontend/less/espo/bootstrap/navbar.less b/frontend/less/espo/bootstrap/navbar.less
index a28c6c6bf4..4c7ad01c7d 100644
--- a/frontend/less/espo/bootstrap/navbar.less
+++ b/frontend/less/espo/bootstrap/navbar.less
@@ -237,141 +237,6 @@
   }
 }
 
-
-// Alternate navbars
-// --------------------------------------------------
-
-// Default navbar
-.navbar-default {
-  background-color: @navbar-default-bg;
-  border-color: @navbar-default-border;
-
-  .navbar-brand {
-    color: @navbar-default-brand-color;
-    &:hover,
-    &:focus {
-      color: @navbar-default-brand-hover-color;
-      background-color: @navbar-default-brand-hover-bg;
-    }
-  }
-
-  .navbar-nav {
-    > li > a {
-      color: @navbar-default-link-color;
-
-      &:hover,
-      &:focus {
-        color: @navbar-default-link-hover-color;
-        background-color: @navbar-default-link-hover-bg;
-      }
-    }
-    > .active > a {
-      &,
-      &:hover,
-      &:focus {
-        color: @navbar-default-link-active-color;
-        background-color: @navbar-default-link-active-bg;
-      }
-    }
-    > .disabled > a {
-      &,
-      &:hover,
-      &:focus {
-        color: @navbar-default-link-disabled-color;
-        background-color: @navbar-default-link-disabled-bg;
-      }
-    }
-  }
-
-  .navbar-toggle {
-    border-color: @navbar-default-toggle-border-color;
-    &:hover,
-    &:focus {
-      background-color: @navbar-default-toggle-hover-bg;
-    }
-    .icon-bar {
-      background-color: @navbar-default-toggle-icon-bar-bg;
-    }
-  }
-
-  .navbar-collapse,
-  .navbar-form {
-    border-color: @navbar-default-border;
-  }
-
-  // Dropdown menu items
-  .navbar-nav {
-    // Remove background color from open dropdown
-    > .open > a {
-      &,
-      &:hover,
-      &:focus {
-        background-color: @navbar-default-link-active-bg;
-        color: @navbar-default-link-active-color;
-      }
-    }
-
-    @media (max-width: @grid-float-breakpoint-max) {
-      // Dropdowns get custom display when collapsed
-      .open .dropdown-menu {
-        > li > a {
-          color: @navbar-default-link-color;
-          &:hover,
-          &:focus {
-            color: @navbar-default-link-hover-color;
-            background-color: @navbar-default-link-hover-bg;
-          }
-        }
-        > .active > a {
-          &,
-          &:hover,
-          &:focus {
-            color: @navbar-default-link-active-color;
-            background-color: @navbar-default-link-active-bg;
-          }
-        }
-        > .disabled > a {
-          &,
-          &:hover,
-          &:focus {
-            color: @navbar-default-link-disabled-color;
-            background-color: @navbar-default-link-disabled-bg;
-          }
-        }
-      }
-    }
-  }
-
-
-  // Links in navbars
-  //
-  // Add a class to ensure links outside the navbar nav are colored correctly.
-
-  .navbar-link {
-    color: @navbar-default-link-color;
-    &:hover {
-      color: @navbar-default-link-hover-color;
-    }
-  }
-
-  .btn-link {
-    color: @navbar-default-link-color;
-    &:hover,
-    &:focus {
-      color: @navbar-default-link-hover-color;
-    }
-    &[disabled],
-    fieldset[disabled] & {
-      &:hover,
-      &:focus {
-        color: @navbar-default-link-disabled-color;
-      }
-    }
-  }
-}
-
-// Inverse navbar
-
 .navbar-inverse {
   background-color: @navbar-inverse-bg;
   border-color: @navbar-inverse-border;
diff --git a/frontend/less/espo/bootstrap/variables.less b/frontend/less/espo/bootstrap/variables.less
index d63262128a..e4d08dee91 100644
--- a/frontend/less/espo/bootstrap/variables.less
+++ b/frontend/less/espo/bootstrap/variables.less
@@ -138,66 +138,27 @@
 @grid-float-breakpoint-max: (@grid-float-breakpoint - 1);
 
 
-
-//== Navbar
-//
-//##
-
-@navbar-collapse-max-height:       340px;
-
-@navbar-default-color:             #777;
-@navbar-default-bg:                #f8f8f8;
-@navbar-default-border:            darken(@navbar-default-bg, 6.5%);
-
-// Navbar links
-@navbar-default-link-color:                #777;
-@navbar-default-link-hover-color:          #333;
-@navbar-default-link-hover-bg:             transparent;
-@navbar-default-link-active-color:         #555;
-@navbar-default-link-active-bg:            darken(@navbar-default-bg, 6.5%);
-@navbar-default-link-disabled-color:       #ccc;
-@navbar-default-link-disabled-bg:          transparent;
-
-// Navbar brand label
-@navbar-default-brand-color:               @navbar-default-link-color;
-@navbar-default-brand-hover-color:         darken(@navbar-default-brand-color, 10%);
-@navbar-default-brand-hover-bg:            transparent;
-
-// Navbar toggle
-@navbar-default-toggle-hover-bg:           #ddd;
-@navbar-default-toggle-icon-bar-bg:        #888;
-@navbar-default-toggle-border-color:       #ddd;
+// Navbar
 
 
-//=== Inverted navbar
-// Reset inverted navbar basics
-//@navbar-inverse-color:                      lighten(@gray-light, 15%);
+// Inverted navbar
+
 @navbar-inverse-bg:                         #222;
-//@navbar-inverse-border:                     darken(@navbar-inverse-bg, 10%);
 
-// Inverted navbar links
-//@navbar-inverse-link-color:                 lighten(@gray-light, 15%);
-//@navbar-inverse-link-hover-color:           #fff;
 @navbar-inverse-link-hover-bg:              transparent;
-//@navbar-inverse-link-active-color:          @navbar-inverse-link-hover-color;
-//@navbar-inverse-link-active-bg:             darken(@navbar-inverse-bg, 10%);
 @navbar-inverse-link-disabled-color:        #444;
 @navbar-inverse-link-disabled-bg:           transparent;
 
-// Inverted navbar brand label
 @navbar-inverse-brand-color:                @navbar-inverse-link-color;
 @navbar-inverse-brand-hover-color:          #fff;
 @navbar-inverse-brand-hover-bg:             transparent;
 
-// Inverted navbar toggle
 @navbar-inverse-toggle-hover-bg:            #333;
 @navbar-inverse-toggle-icon-bar-bg:         #fff;
 @navbar-inverse-toggle-border-color:        #333;
 
 
-//== Navs
-//
-//##
+// Navs
 
 //=== Shared nav styles
 @nav-link-padding:                          10px 15px;
@@ -220,8 +181,6 @@
 
 
 //== Pagination
-//
-//##
 
 @pagination-color:                     @link-color;
 @pagination-bg:                        #fff;
diff --git a/frontend/less/espo/variables.less b/frontend/less/espo/variables.less
index 17872a22eb..539db6dc75 100644
--- a/frontend/less/espo/variables.less
+++ b/frontend/less/espo/variables.less
@@ -152,9 +152,6 @@
 
 @table-border-color: @default-border-color;
 
-@navbar-default-toggle-hover-bg: @default-border-color;
-@navbar-default-toggle-border-color: @default-border-color;
-
 @nav-tabs-border-color: @default-border-color;
 @nav-tabs-active-link-hover-border-color: @default-border-color;
 @nav-tabs-justified-link-border-color: @default-border-color;
@@ -167,7 +164,6 @@
 
 @zindex-popover: 1600;
 @zindex-tooltip: 2600;
-@navbar-collapse-max-height: none;
 
 @login-panel-heading-bg: var(--login-panel-heading-bg);