[mirotalksfu] - improve UI

public/css/landing.css

@@ -2117,6 +2117,18 @@ main {
 
 #joinRoomForm {
     display: none;
+    margin-top: 32px;
+    background: rgba(70, 120, 249, 0.08);
+    border-radius: 10px;
+    padding: 32px 24px;
+    transition:
+        box-shadow 0.3s,
+        border-color 0.3s;
+}
+
+#joinRoomForm:focus-within,
+#joinRoomForm:hover {
+    border-color: #376df9;
 }
 
 /*--------------------------------------------------------------