Add updates by car screen and modal popup (#29)

src/components/useStyles.jsx

@@ -5,6 +5,17 @@ const MENUITEM_PADDING_TOP = 8;
 const DRAWER_WIDTH = 240;
 
 const useStyles = makeStyles((theme) => ({
+  modal: {
+    display: "flex",
+    alignItems: "center",
+    justifyContent: "center",
+  },
+  modaldialog: {
+    backgroundColor: theme.palette.background.paper,
+    border: "2px solid #000",
+    boxShadow: theme.shadows[5],
+    padding: theme.spacing(2, 4, 3),
+  },
   paper: {
     marginTop: theme.spacing(8),
     display: "flex",
@@ -105,6 +116,13 @@ const useStyles = makeStyles((theme) => ({
     marginLeft: "auto",
     marginRight: -12,
   },
+  link: {
+    cursor: "pointer",
+    textDecorationColor: "Blue",
+    textDecorationStyle: "solid",
+    textDecorationLine: "underline",
+    color: "Blue",
+  },
 }));
 
 export default useStyles;