Remove hardcoded background-size

Signed-off-by: J0WI <J0WI@users.noreply.github.com>

Author: J0WI

css/firstrunwizard.scss

@@ -18,9 +18,9 @@
 #firstrunwizard .firstrunwizard-header .logo {
 	background-image: var(--image-logo);
 	background-repeat: no-repeat;
-	background-size: 175px;
+	background-size: contain;
 	background-position: center;
-	width: 252px;
+	width: 175px;
 	height: 120px;
 	margin: 0 auto;
 }