body {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0;
    background-color: #f0f0f0;
    font-family: Arial, sans-serif;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    width: 100%;
    box-sizing: border-box;
}

.controls {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.instructions {
    width: 90%;
    max-width: 600px;
    background-color: #ffffff;
    padding: 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: left;
    cursor: pointer;
}

.instructions summary {
    font-weight: bold;
    font-size: 1.1em;
}

.instructions p, .instructions ul {
    margin-top: 10px;
    cursor: default;
}

.button-primary {
    padding: 10px 20px;
    font-size: 16px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.button-primary:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

#display-area {
    width: 90%;
    max-width: 600px;
    min-height: 100px;
    border: 1px solid #ccc;
    background-color: white;
    padding: 10px;
}