body {
        font-family: Arial, sans-serif;
        background-color: #f4f4f4;
        margin: 0;
        padding: 20px;
      }

      
      h1{
        text-align: center;
      }

      #joke_btn {
        display: block;
        margin: 0 auto;
        padding: 10px 20px;
        font-size: 16px;
        cursor: pointer;
      }
      #joke {
        margin-top: 20px;
        text-align: center;
        font-size: 18px;
      }
    footer {
  text-align: center;
  padding: 20px;
  background-color: #f8f9fa;
  color: #6c757d;
  position: relative;
  bottom: 0;
  width: 100%;
    }
    a{
        color: #007bff;
        text-decoration: none;
    }