
* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.
* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.
어제부터 왜 안되는지 모르겠어요..
뭔가 실수가 있는 거 같은데 ..
.web_class
구간이 뭘 해도 안 잡혀요

작성한 코드 및 에러 메세지
CSS
.web_main{
background-color: green;
background-image: linear-gradient(0deg, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url("img/ftisland.jpg");
background-position: center 5%;
background-size: 300px;
color: white;
height: 250px;
width: 100%;
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
};
.web_post{
background-color: black;
width: 100%;
height: 200px
};
HTML
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="ftisland.css">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
<title>FTisland 팬클럽</title>
</head>
<body>
<div class="web_main">
<h1>FTisland의 팬명록</h1>
</div>
<div class="web_post">
<div class="form-floating mb-3">
<input type="email" class="form-control" id="floatingInput" placeholder="name@example.com">
<label for="floatingInput">Email address</label>
</div>
<div class="form-floating">
<textarea class="form-control" placeholder="Leave a comment here" id="floatingTextarea"></textarea>
<label for="floatingTextarea">Comments</label>
</div>
<button type="button" class="btn btn-dark">Dark</button>
</div>
</body>
</html>
