
* 겪고 있는 문제 상황을 최대한 자세하게 작성해주세요.
* 문제 해결을 위해 어떤 시도를 해보았는지 구체적으로 함께 알려주세요.
JQery 배우는중에 스파르타 피디아에서 수정할려고 보니 피디아가 뭔가 잘못되어 있습니다 왜 그런지 확인 부탁합니다

<title>스파르타 피디아</title>
<link href="https://fonts.googleapis.com/css2?family=Gowun+Dodum&display=swap" rel="stylesheet">
<style>
* {
font-family: 'Gowun Dodum', sans-serif;
}
.mytitle {
width: 100%;
height: 250px;
background-image: linear-gradient(0deg, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('https://movie-phinf.pstatic.net/20210715_95/1626338192428gTnJl_JPEG/movie_image.jpg');
background-position: center;
background-size:cover;
color: white;
display: flex;
flex-direction:column ;
justify-content: center;
align-items: center;
}
.mytitle > button {
width: 200px;
height: 50px;
background-color: transparent;
color: white;
border-radius: 50px;
border: 1px solid white;
margin-top: 10px;
}
.mytitle > button:hover {
border: 2px solid white;
}
.mycomment {
color: gray;
}
.mycards {
margin: 20px auto 0px auto;
width: 95%
max-width: 1200px;
}
.mypost {
width: 95%;
margin: 20px auto 0px auto;
box-shadow:0px 0px 3px 0px gray;
padding: 20px;
}
.mybtns {
display: flex;
flex-direction: row;
justify-content: center;
align-items: center;
margin-right: 10px;
}
.mybtns > button {
margin-right: 10px;
}
</style>
<script>
</script>
</head>
<body>
<div class="mytitle">
<h1>내생애 최고의 영화들</h1>
<button onclick="hey()">영화 기록허기</button>
</div>
<div class="mypost" id="post-box">
<div class="form-floating mb-3">
<input type="email" class="form-control" id=url" placeholder="name@example.com">
<label for="floatingInput">영화url</label>
</div>
<div class="input-group mb-3">
<label class="input-group-text" for="inputGroupSelect01">별점</label>
<select class="form-select" id="inputGroupSelect01">
<option selected>-- 선택하기--- </option>
<option value="1">⭐</option>
<option value="2">⭐⭐</option>
<option value="3">⭐⭐⭐</option>
<option value="3">⭐⭐⭐⭐</option>
<option value="3">⭐⭐⭐⭐⭐</option>
</select>
<div class="form-floating">
<textarea class="form-control" placeholder="Leave a comment here" id="floatingTextarea"></textarea>
<label for="floatingTextarea">코멘트</label>
<div class="mybtn">
<button type="button" class="btn btn-dark">기록하기</button>
<button type="button" class="btn btn-outline-dark">닫기</button>
</div>
</div>
<div class="mycards">
<div id="card-box" class="row row-cols-1 row-cols-md-4 g-4">
<div class="col">
<div class="card">
<img src="https://movie-phinf.pstatic.net/20210728_221/1627440327667GyoYj_JPEG/movie_image.jpg"
class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">여기에 제목이 들어갑니다.</h5>
<p class="card-text">여기에 내용이 들어가지요.</p>
<p>⭐⭐⭐</p>
<p class="mycomment">여기에 코멘트가 등어갑니다.</p>
</div>
</div>
</div>
<div class="col">
<div class="card">
<img src="https://movie-phinf.pstatic.net/20210728_221/1627440327667GyoYj_JPEG/movie_image.jpg"
class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">여기에 제목이 들어갑니다.</h5>
<p class="card-text">여기에 내용이 들어가지요.</p>
<p>⭐⭐⭐</p>
<p class="mycomment">여기에 코멘트가 등어갑니다.</p>
</div>
</div>
</div>
<div class="col">
<div class="card">
<img src="https://movie-phinf.pstatic.net/20210728_221/1627440327667GyoYj_JPEG/movie_image.jpg"
class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">여기에 제목이 들어갑니다.</h5>
<p class="card-text">여기에 내용이 들어가지요.</p>
<p>⭐⭐⭐</p>
<p class="mycomment">여기에 코멘트가 등어갑니다.</p>
</div>
</div>
</div>
<div class="col">
<div class="card">
<img src="https://movie-phinf.pstatic.net/20210728_221/1627440327667GyoYj_JPEG/movie_image.jpg"
class="card-img-top" alt="...">
<div class="card-body">
<h5 class="card-title">여기에 제목이 들어갑니다.</h5>
<p class="card-text">여기에 내용이 들어가지요.</p>
<p>⭐⭐⭐</p>
<p class="" mycomment">여기에 코멘트가 등어갑니다.</p>
</div>
</div>
</div>
</div>
</div>
</body>
