changing font sizes to using vw so changes when screen size changes

shop/static/styles.css

@@ -69,7 +69,7 @@ a:link {
 }
 
 .home_title {
-    font-size: 500%;
+    font-size: 5vw;
     border: thin;
     font-family: Andale Mono, monospace;
     border-bottom: 2px solid grey;