navigation style cleanup

src/style/components/navigation.scss

@@ -1,36 +1,10 @@
 .navigation {
-  width: 100%;
+    width: 100%;
-  background-color: white;
+    background-color: white;
+}
 
-  &__body {
+.navigation__body {
     display: flex;
     justify-content: space-between;
     align-items: center;
-  }
-}
-
-.navigation__right {
-  color: var(--dark-color);
-  font-size: var(--normal-font-size);
-  margin-right: 1em;
-
-  z-index: 1000;
-}
-
-@media (max-width: var(--mobile-width)) {
-  .navigation {
-    background-color: white;
-  }
-
-  .navigation__right {
-    display: none;
-  }
-}
-
-@media screen and (min-width: var(--tablet-min-width)) and (max-width: var(--tablet-max-width)) {
-  @media screen and (orientation: portrait) {
-    .navigation__right {
-      display: none;
-    }
-  }
 }