* {
    margin: 0;
    padding: 0;
}

body {
    width: 100%;
    height: 100%;
}

header {
    width: 100%;
    height: auto;
    line-height: 10px;
    justify-items: center;
    align-items: center;
}

header h1 {
    margin-top: 20px;
}

header p {
    margin-top: 20px;
    margin-bottom: 10px;
}

main {
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: 2fr 0.25fr 1fr;
    justify-items: center;
}

#screen {
    border: 1px solid black;
    width: 320px;
    height: 320px;
}

#console {
    width: 320px;
    height: 100%;
}

#controls {
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr;
    justify-items: center;
    align-items: center;
}

#d-pad,
#abxy {
    width: 160px;
    height: 160px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
}

.button {
    border: 1px solid black;
    border-radius: 50%;
    width: 100%;
    height: 100%;
    justify-items: center;
    align-content: center;
}

.button:hover {
    background-color: black;
}