#main
{
    float: left;
    width: 300px;
    height: 200px;
    margin: calc(50vh - 100px) calc(50vw - 150px);
    background-color: rgb(44, 44, 39);
}
body
{
    float: left;
    background-color: rgb(119, 43, 43);
    margin: 0;
    width: 100vw;
    height: 100vh;
}
a
{
    float: left;
    text-align: center;
    width: 100%;
    height: 30px;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    font-size: 20px;
    color: azure;
    margin: 20px 0px;
}