body {
    font-family: Tahoma, sans-serif;
    background: #2c3440;
    color: white;
    padding: 32px;
}

.card {
    background: #456;
    border-radius: 10px;
    padding: 32px;
    display: flex;
    gap: 40px;
}

@media screen and (max-width: 1080px) {
    .card {
        flex-direction: column;
    }
}

.card .canvas {
    text-align: center;
}

.canvas {
    min-width: 310px;
}

h1 {
    margin-bottom: 16px;
}

form {
    margin: 16px 0;
}

form label {
    display: inline-block;
}

form div {
    margin-top: 16px;
}

canvas {
    border: solid 1px #9ab;
    margin: 20px auto;
}

a.download,
a.button,
button[type="submit"] {
    padding: 8px 16px;
    background: rgba(5,172,31,1);
    color: white;
    font-weight: bold;
    border-radius: 4px;
    text-decoration: none;
    border: none;
    cursor: pointer;
}

button.demo {
    background: rgb(68, 85, 102);
    color: white;
}

a.download.disabled {
    background: DimGrey;
    color: white;
    cursor: not-allowed;
}

a.button.code {
    margin: 24px auto;
    display: inline-block;
}

footer {
    text-align: center;
}