Adjust rte table styles

public/typo3conf/ext/ep_theme/Resources/Private/Assets/scss/base/_rte-content.scss

@@ -32,7 +32,7 @@ table,
 
 thead {
     tr {
-        @apply bg-ep-primary-dark text-white
+        @apply bg-gray-200 text-white
     }
 }
 
@@ -43,9 +43,9 @@ tbody {
 }
 
 th {
-    @apply p-2 text-left;
+    @apply border-r border-overlay-white-50 px-2 py-1 md:p-2 text-left text-sm md:text-base;
 }
 
 td {
-    @apply p-2;
+    @apply border-r border-gray-200 px-2 py-1 md:p-2;
 }