styles: Fix `stylesheet` is `null` error

I had initialised the `stylesheet` variable before the element existed
in the DOM.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/styles.ts b/src/styles.ts
index a9997cf..940ff30 100644
--- a/src/styles.ts
+++ b/src/styles.ts
@@ -1,9 +1,10 @@
 export function styles () {
 	var style = document.createElement('style');
-	var stylesheet = style.sheet as CSSStyleSheet;
 
 	document.head.appendChild(style);
 
+	var stylesheet = style.sheet as CSSStyleSheet;
+
 	stylesheet.insertRule(
 		'.OriginalsPostPlay-BackgroundTrailer .BackToBrowse { visibility: hidden; }',
 		stylesheet.cssRules.length