html,body {
    height:100%;
    width:100%;
}
body {
    background-color:#fdd7e4;
    font-size:16pt;
}

body,h1,p,div,span {
    margin:0em;
    padding:0em;
    overflow:hidden;
}

div.main {
    width:100%;
    height:100%;
    display:flex;
    align-items:center;
    justify-content:center;
}

div.pre {
    white-space:pre;
    text-align:center;
}