diff --git a/resources/assets/themes/theme18.scss b/resources/assets/themes/theme18.scss
index f553a4b0..68bcab0d 100644
--- a/resources/assets/themes/theme18.scss
+++ b/resources/assets/themes/theme18.scss
@@ -5,7 +5,6 @@ $color-background-100: #00c7ff;
 $color-link: #1ca800;
 
 //== changed Colors
-$nav-tabs-link-active-color: #000 !default;
 $body-color: #000;
 $gray-darker: #222;
 $gray-dark: #282828;
@@ -89,7 +88,6 @@ h6,
 }
 
 .form-control:disabled {
-  background: rgba(0, 0, 0, 0.5);
   opacity: 0.7
 }
 
@@ -98,19 +96,6 @@ h6,
   border-bottom: 0 !important;
 }
 
-//.choices__item.is-selected {
-  //color: #000;
-//}
-//
-//.nav-pills {
-  //--bs-nav-pills-link-active-color: #000;
-//}
-//
-//.dropdown-menu {
-  //--bs-dropdown-link-hover-color: #000;
-  //--bs-dropdown-link-active-color: #000;
-//}
-
 #footer {
   padding-top: 1em;
   background: #4d733b url('./theme18/bg_pattern_tiled.png') repeat;
@@ -126,8 +111,39 @@ h6,
 }
 
 body {
-  background:
-    url('./theme18/bg_pattern_tiled.png') repeat,
-  linear-gradient($color-background-0, $color-background-100);
+  background: url('./theme18/bg_pattern_tiled.png') repeat, linear-gradient($color-background-0, $color-background-100) fixed;
   min-height: 100vh;
 }
+
+[id='content'] a {
+  text-decoration: underline;
+
+  &.btn,
+  &.nav-link {
+    text-decoration: none;
+  }
+}
+
+.navbar {
+  --bs-navbar-color: black;
+
+  .icon-icon_angel {
+    background: black;
+  }
+
+  .nav-link {
+    color: black;
+    &:hover,
+    &.active {
+      color: black;
+      text-decoration: underline;
+    }
+  }
+}
+
+td {
+  [class*="text-"] {
+    background: white;
+    border-radius: 3px;
+  }
+}