* {
    margin: 0;
    padding: 0;
}

html { 
    background: url(images/paper.jpg) no-repeat center center fixed;
    background-color: #888;
    background-size: cover;
}

.buttons {
    margin: 2rem;
    gap: 2rem;
    display: flex;
}

.buttons button {
    padding: 1rem;
}

.pixels {
    display: grid;
    width: min(80vh, 50%);
    gap: 1px;
    margin: 2rem;
}

.pixels div {
    background-color: #6B726B;
    height: 0;
    padding-bottom: 100%;
}