body {
    margin: 40px;
    background-color: #e1e1e1;
}

.center-content {
    display: flex;
    justify-content: center;
    align-items: center;
}

h1 {
    font-size: 4em;
 }

.link{
  font-size: 2em;
}

iframe{
  border-radius: 12px;
}