html, body {
    height: 100vh;
    padding: 0;
    margin: 0;
}

body {
    display: grid;
    grid-template-rows: auto minmax(0,1fr) auto;
    box-sizing: border-box;
}

.sPre {
  font-family: Consolas, Menlo, Monaco, Lucida Console, Liberation Mono, DejaVu Sans Mono, Bitstream Vera Sans Mono, Courier New, monospace, serif;
  white-space: pre;
}


.CntrT {
    display: grid;
    grid-template-rows: auto minmax(0,1fr);
    box-sizing: border-box;
}