body {
    font-family: 'Arial', sans-serif;
    background-color: #f0f2f5;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
}

header {
    margin-bottom: 2rem;
}

h1 {
    font-size: 2.5rem;
    color: #1877f2;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

#lotto-container {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.lotto-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #fff;
    border: 2px solid #1877f2;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: #1877f2;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

#generate-btn {
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    color: #fff;
    background-color: #1877f2;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: background-color 0.3s, box-shadow 0.3s;
}

#generate-btn:hover {
    background-color: #166fe5;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}