* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.
* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>나만의 중고마켓</title>
<link rel="stylesheet" href="https://s3.ap-northeast-2.amazonaws.com/materials.spartacodingclub.kr/easygpt/default.css">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-rbsA2VBKQhggwzxH7pPCaAqO46MgnOM80zW1RWuH61DGLwZJEdK2Kadq2F9CUG65" crossorigin="anonymous">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"
integrity="sha384-kenU1KFdBIe4zVF0s0G1M5b4hcpxyD9F7jL+jjXkk+Q2h455rYXK/7HAuoJl+0I4"
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<style>
/* 꾸미기 */
</style>
</head>
<body>
<section class="hero d-flex align-items-center">
<div class="container">
<div class="row">
<div class="col-lg-8 offset-lg-2">
<h1 class="text-white mb-4">Success Coaching</h1>
<h2 class="text-white mb-4">1:1 customized success partner.</h2>
</div>
</div>
</div>
</section>
</body>
</html>
그대로 했는데, alt b 누르면 그냥 백지 화면만 나옵니다.
