a:link {
    color: red;
  }
  
  /* visited link */
  a:visited {
    color: green;
  }
  
  /* mouse over link */
  a:hover {
    color: hotpink;
  }
  
  /* selected link */
  a:active {
    color: blue;
  }
  
  h1 {
    margin: 0;
    padding: 20px 0;
    color: #000000;
    text-shadow: 3px 3px 1px rgb(255, 255, 255);
  }
  p, li {
    font-size: 16px;
    line-height: 2;
    letter-spacing: 1px;
  }
  body {
    width: 600px;
    margin: 0 auto;
    background-color: #ffffff;
    padding: 0 20px 20px 20px;
    border: 5px solid black;
  }
  html {
    background-color: #ce60d8;
  }
  img {
    display: block;
    margin: 0 auto;
  }

  .t1{
    border-spacing: 15px;
  }
  .t2{
    border-spacing: 0px;
  }
  th, td{
    border: 2px solid black;
    padding: 10px;
  }
  .header {
    overflow: hidden;
    background-color: #f1f1f1;
    padding: 20px 10px;
  }
  .header a {
    float: left;
    color: black;
    text-align: center;
    padding: 12px;
    text-decoration: none;
    font-size: 18px;
    line-height: 25px;
    border-radius: 4px;
  }
  .header a.logo {
    font-size: 25px;
    font-weight: bold;
  }
  .header a:hover {
    background-color: #ddd;
    color: black;
  }
  fieldset
  {
    background-color:rgb(209, 123, 223);
    max-width:500px;
    padding:16px;	
  }
  .legend1
  {
    margin-bottom:1px;
    margin-left:16px;
  }

  button {
    display: inline-block;
    background-color: #7b38d8;
    border-radius: 10px;
    border: 4px double #cccccc;
    color: #eeeeee;
    text-align: center;
    font-size: 18px;
    padding: 10px;
    width: 100px;
    -webkit-transition: all 0.5s;
    -moz-transition: all 0.5s;
    -o-transition: all 0.5s;
    transition: all 0.5s;
    cursor: pointer;
    margin: 1px;
  }

  button:hover {
    background-color: green;
  }