body {
  display: flex;
  flex-direction: column;
  height: 100vh;
  justify-content: flex-start;
  align-items: center;
}

.column-block {
    background-color: #fff;
    border: 4px solid #fc0;
    font-size: 118%;
    margin-bottom: 20px;
    padding: 20px 20px 0;
    width: auto;

    a {
        color: #0079c9;
    }
}

@media (width >= 500px) {
    .column-block {
        width: 500px;
    }
}