* {
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    background-color: steelblue;
    height: 100vh;
    width: 100vw;
}

main {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

button {
    border: none;
    border-radius: 5px;
    padding: 8px;
}

#edge-button {
    height: 60px;
    width: 60px;
}

canvas {
    background-color: #f0f0f0;
    border: none;
    max-height: 60vh;
}