Create game from form (#15)

Co-authored-by: Maxime Adler <madler@sqli.com>
Reviewed-on: #15

src/GameIdeas/Client/GameIdeas.BlazorApp/wwwroot/css/app.css

@@ -27,6 +27,7 @@
     --index-backdrop: 700;
     --index-dropdown: 900;
     --index-popup: 1000;
+    --index-overlay: 1100;
 }
 
 html {
@@ -41,10 +42,6 @@ html, body, #app {
     height: 100%;
 }
 
-.valid.modified:not([type=checkbox]) {
-    border: 2px solid var(--green);
-}
-
 .invalid {
     border: 2px solid var(--red) !important;
 }
@@ -65,7 +62,7 @@ html, body, #app {
     padding: 0.6rem 1.25rem 0.7rem 1.25rem;
     position: fixed;
     width: 100%;
-    z-index: 1000;
+    z-index: 10000;
 }
 
     #blazor-error-ui .dismiss {