* {
    margin: 0;
    padding: 0;
    font-family: sans-serif;
    font-family: -apple-system, sans-serif;
    letter-spacing: -0.5px;
    box-sizing: border-box;
}

html, body {
    height: 100%;
    width: 100%;
    font-size: 16px;
}

body {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #1d1d1d;
}

#plateau {
    width: 350px;
    height: 350px;
    background-color: #fff;
    position: relative;
}

#element {
    width: 70px;
    height: 70px;
    position: absolute;
    background-color: red;
    cursor: pointer;
    z-index: 2;
}

#element2 {
    width: 70px;
    height: 70px;
    position: absolute;
    background-color: rgb(0, 30, 255);
    cursor: pointer;

}