re meta#270 ny pil på bøyningsknapp

src/components/Header.vue

@@ -130,10 +130,6 @@ details {
   margin-top: 10px;
 }
 
-details[open] summary:after {
-  content: "▼";
-}
-
 details > summary {
   position: relative;
   max-width: 80px;
@@ -146,7 +142,7 @@ details > summary {
 }
 
 details > summary:after {
-  content: "▶";
+  content: "⌄";
   font-weight: bold;
   position: absolute;
   right: 0;