added prototype

webseite-gulp-ts/frontend/dev/scss/05_modules/_menu-main.scss

@@ -0,0 +1,60 @@
+.menu-main {
+  background-color: $color-5;
+
+  ul {
+    padding: 0;
+    margin: 0;
+    list-style: none;
+  }
+
+  ul ul {
+    display: none; // TODO: change to not visible
+  }
+  ul > li:hover,
+  ul > li:focus,
+  ul > li:focus-within {
+    ul {
+      display: block;
+    }
+  }
+
+  ul.list {
+    display: flex;
+
+    justify-content: center;
+    li {
+      a {
+        display: inline-block;
+        text-decoration: none;
+        text-transform: uppercase;
+        color: $color-white;
+        padding: 0.5rem 1rem;
+        transition: all 0.4s ease-out;
+        &:hover,
+        &:focus {
+          background-color: $color-white;
+          color: $color-5;
+        }
+      }
+    }
+  }
+
+  ul.sublist {
+    position: absolute;
+    background-color: rgba($color-5, 0.8);
+    li {
+      a {
+        display: inline-block;
+        background-color: $color-5;
+        color: $color-white;
+        padding: 0.5rem 1rem;
+        transition: all 0.4s ease-out;
+        &:hover,
+        &:focus {
+          background-color: $color-white;
+          color: $color-5;
+        }
+      }
+    }
+  }
+}