* {
    margin: 0;
    padding: 0;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

h1 {
    margin: 25px;
}

.grid {
    width: 800px;
    height: 800px;
    display: flex;
    flex-wrap: wrap;
    background: black;
    gap: 0;
    padding: 0;
    border: solid 2px black;
}

.pixel {
    background: white;
    margin: 0;
    padding: 0;
}

.ctrl-panel {
    margin: 25px;
    display: flex;
    gap: 10px;
}

button {
    padding: 5px;
}