fix ISP not following UI roundness

src/App.vue

@@ -28,10 +28,10 @@
       >
         <user-panel />
         <template v-if="layoutType !== 'mobile'">
-          <nav-panel />
-          <instance-specific-panel v-if="showInstanceSpecificPanel" />
-          <features-panel v-if="!currentUser && showFeaturesPanel" />
-          <who-to-follow-panel v-if="currentUser && suggestionsEnabled" />
+          <NavPanel />
+          <InstanceSpecificPanel v-if="showInstanceSpecificPanel" />
+          <FeaturesPanel v-if="!currentUser && showFeaturesPanel" />
+          <WhoToFollowPanel v-if="currentUser && suggestionsEnabled" />
           <div id="notifs-sidebar" />
         </template>
       </div>

src/components/instance_specific_panel/instance_specific_panel.vue

@@ -11,3 +11,9 @@
 </template>
 
 <script src="./instance_specific_panel.js"></script>
+
+<style lang="scss">
+  .instance-specific-panel .panel-body {
+    border-radius: var(--roundness);
+  }
+</style>