body {
    margin: 0;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    background-color: #a5b2fc;
}

#container {
    width: calc(100vw - 16px);
    height: calc(100vh - 16px);
    border: 8px solid rgb(0, 0, 0);
    display: flex;
    align-items: center;
    justify-content: center;
}

#divCentred {
    width: 100px;
    height: 100px;
}

h1,
h2,
h3 {
    font-weight: normal;
    text-shadow: 2px 2px 5px black;
    color: #fbcaff;
    text-align: center;
}