* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: #00aeea;
    font-family: Arial, sans-serif;
    text-align: center;
    overflow: hidden;
}

h1 {
    margin: 2vh 0 4vh;
    font-size: 3vh;
    font-weight: bold;
}

.grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 4vh 4vw;
    width: 80vw;
    margin: auto;
}

.item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.circle {
    width: 10vw;
    max-width: 130px;
    aspect-ratio: 1 / 1;
    border-radius: 50%;
    border: 0.3vh solid black;
}

.circle.on {
    background: red;
}

.circle.off {
    background: transparent;
}

.label {
    margin-top: 1vh;
    padding: 0.6vh 1vw;
    border: 0.2vh solid white;
    color: red;
    font-weight: bold;
    font-size: 2vh;
}