body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
}
.container {
    max-width: 600px;
    margin: 50px auto;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}
h1 {
    text-align: center;
}
#classInput {
    width: 80%;
    padding: 10px;
    margin-right: 10px;
}
#searchBtn {
    padding: 10px 15px;
    cursor: pointer;
}
.result-item {
    border-bottom: 1px solid #ddd;
    padding: 10px 0;
}
.result-item a {
    color: #007BFF;
    text-decoration: none;
}