.ex2-odd {
    background-color: pink;
    font-family: Verdana, "DejaVu Sans", sans-serif;
  }

  #ex2-row2 {
    color: blue;
    font-size: 36px;
  }

  .ex2-fontsize {
    font-size: 24px;
  }

  #ex2-row4 {
    background-color: rgb(159, 233, 157);
    font-size: 24px;
    font-weight: bold;
  }

  .ex3-button1, .ex3-button2 {
    font-size: 28px;
    font-family: Helvetica, "Times New Roman", sans-serif;
  }

  .ex3-button1 {
    background-color: black;
    color: white;
  }

  .ex3-button2 {
    background-color: yellow;
  }

  .ex4-avatar.proportioned {
    width: 300px;
    height: auto;
  }

  .ex4-avatar.distorted {
    width: 200px;
    height: 400px;
  }

  .ex5-container .text {
    background-color: yellow;
    color: red;
    font-size: 20px;
    text-align: center;
  }