body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

header {
    background-color: #4CAF50;
    color: white;
    text-align: center;
    padding: 1rem;
}

#tutorial, #calculator {
    padding: 20px;
    background-color: white;
    margin: 10px auto;
    max-width: 800px;
    border-radius: 8px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.1);
}

#tutorial-header {
    display: flex;
    justify-content: space-between;
}

#toggleTutorialBtn {
    margin-right: 1rem;
    height: 3rem;
    align-self: center;
}

.input-section {
    margin-bottom: 10px;
}

input[type="text"], input[type="number"] {
    width: 100%;
    padding: 8px;
    margin-top: 5px;
    border-radius: 4px;
    border: 1px solid #ccc;
}

button {
    background-color: #4CAF50;
    color: white;
    padding: 10px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #45a049;
}

#result {
    margin-top: 20px;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 4px;
    border: 1px solid #ddd;
}