style.css

*, *::before, *::after {
    box-sizing: border-box;
    font-family: 'Gill Sans', 'Gill Sans MT', Calibri, 'Trebuchet MS', sans-serif;
    font-weight: normal;
  }

  body {
    padding: 0;
    margin: 0;
    background: linear-gradient(to right, #191825, #462f7d);
  }

  h1 {
    font-weight: normal;
    text-transform: uppercase;
  }

  a {
    display: block;
    text-align: center;
    margin: auto;
    font-size: 1rem;
    color: #191825;
  }

  a:hover {
    color: #ffa3fd;
  }

  button {
    color: #ffa3fd;
  }

  .grid {
    display: grid;
    justify-content: center;
    align-content: center;
    min-height: 100vh;
    grid-template-columns: repeat(4, 100px);
    grid-template-rows: minmax(120px, auto) repeat(5, 100px);
  }

  .grid > button {
    cursor: pointer;
    font-size: 2rem;
    border: 1px solid #000000;
    outline: none;
    background-color: rgba(0, 0, 0, 0.5);
  }
  .grid > button:hover {
    background-color: rgba(0, 0, 0, 0.95);
  }

  .big-span {
    grid-column: span 2;
  }
  .display {
    grid-column: 1 / -1;
    background-color: rgba(134, 93, 255, 0.55);
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    flex-direction: column;
    padding: 10px;
    word-wrap: break-word;
    word-break: break-all;
  }

  .display .previous-term {
    color: rgba(255, 255, 255, .75);
    font-size: 1.5rem;
  }
  .display .current-term {
    color: #fff;
    font-size: 2rem;
  }