fix headers open sizes

src/components/CustomHeaders.tsx

@@ -9,7 +9,7 @@ interface IProps {
 
 const CustomHeaders = ({ headers, updateHeaders }: IProps) => {
 	return (
-		<div className="mt-4 w-full max-w-175">
+		<div className="mt-4 w-full max-w-150">
 			<details className="bg-(--neutral-content)/20 p-4 rounded-lg">
 				<summary>
 					Custom Headers (PDF)

src/components/HeaderFields.tsx

@@ -9,7 +9,7 @@ interface IProps {
 
 const HeaderFields = ({ headers, updateHeaders }: IProps) => {
 	return (
-		<div className="mt-4 w-full max-w-175">
+		<div className="mt-4 w-full max-w-150">
 			<details className="bg-(--neutral-content)/15 p-4 rounded-lg">
 				<summary>
 					Headers

src/pages/Chessboard.tsx

@@ -109,6 +109,7 @@ const Chessboard = () => {
 									id="render-times"
 									name="render-times"
 									type="checkbox"
+									disabled={!gameState.pgn}
 									checked={gameState.diagramClock}
 									onChange={handleToggleClock}
 								/>