improve new member form style

club/static/club/members.scss

@@ -0,0 +1,24 @@
+#club_members_table {
+  tbody label {
+    margin: 0;
+    padding: 0;
+  }
+}
+
+#add_club_members_form {
+  fieldset {
+    display: flex;
+    flex-direction: row;
+    column-gap: 2em;
+    row-gap: 1em;
+    flex-wrap: wrap;
+
+    @media (max-width: 1100px) {
+      justify-content: space-evenly;
+    }
+
+    .errorlist {
+      max-width: 300px;
+    }
+  }
+}