body {
            font-family: 'Arial', sans-serif;
            background-color: #f4f4f9;
            margin: 0;
            padding: 0;
        }
.container {
    max-width: 600px;
    margin: 50px auto;
    padding: 30px;
    background-color: #f9f9fb;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    border: 1px solid #ddd;
}
h2 {
    color: #333;
    text-align: center;
    font-size: 24px;
    margin-bottom: 20px;
}
        p {
            font-size: 16px;
            color: #555;
            text-align: center;
        }
        form {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        label {
            font-weight: bold;
            margin-bottom: 10px;
        }
textarea {
    width: 100%;
    height: 120px;
    padding: 15px;
    font-size: 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    margin-bottom: 20px;
}
input[type="submit"] {
    background-color: #4CAF50;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 18px;
    transition: background-color 0.3s ease;
}

input[type="submit"]:hover {
    background-color: #45a049;
}

#responseContainer {
    margin-top: 30px;
    padding: 20px;
    background-color: #fff;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

#responseContainer h3 {
    font-size: 16px;
    color: #333;
    margin-top: 0; /* 上部のスペースを削減 */
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 1px solid #ccc;
}
#response {
    margin-top: 30px;
    padding: 20px;
    background-color: #e3f2fd; /* 軽い青色 */
    border-radius: 8px;
    border: 1px solid #e0e0e0;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    white-space: pre-wrap;
    font-size: 16px;
    color: #333;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
}

#response.show {
    opacity: 1;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

table th, table td {
    padding: 12px;
    text-align: left;
    border: 1px solid #ddd;
}

table th {
    background-color: #f4f4f9;
    font-weight: bold;
}

table tr:nth-child(even) {
    background-color: #f9f9fb;
}

a {
    display: block;
    margin-top: 20px;
    text-align: center;
    color: #4CAF50;
    text-decoration: none;
    font-weight: bold;
}

a:hover {
    color: #45a049;
}