main div {
  flex: 1
}

body {
    background-color:#000000;
}
p span {
  color: white;
  font-family: courier, monospace;
  font-size: 150%;
  background-color:#000000;
}
h3 {
  color: white;
  font-family: courier, monospace;
  font-weight: bold;
  font-size: 200%;
}
parent {
    align-self: center;
    width: 100%
}
iframe, video {
  max-width:100%;
  max-height:100%;
}
img {
    max-width: 100%;
    max-height: 100%;
}
.container {
  display: inline-grid; 
  width:100%;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 1fr 1fr 1fr;
  gap: 4vw;
  place-items: center;
  line-height: 150%;
  overflow-x: auto;
  overflow-y: auto;
}
.box2 {
  max-width: 560px;
  max-height: 1100px;
  background-image: url('bg.gif');
  background-size: 53%;
}
.box {
  max-width: 560px;
  max-height: 450px;
  background-image: url('bg.gif');
  background-size: 53%;
}
table, th, td {
    display: inline-table;
    width:560px;
    border-style: solid;
    border-width: 2px;
    color: white;
    font-family: courier, monospace;
    font-size: 150%;
    text-align: center;
    line-height: 100px;
    margin-top: 1vw;
}