body {
    color: rgb(0, 0, 0);
    background:cyan;
     font-family: "Open Sans", sans-serif;
}

.yellow{
background:yellow;
    border: solid 2px #000000;
    }
.green{
background: green;
  border: 2px solid #000000;
}
.main {
    padding: 2px;
    height: 600px;
    width: 500px;
}


.button{
    background:rgb(255, 255, 255);
    border: solid 2px #000000;
    padding: 2px;
}

.links{
  width: 500px;
  padding:2px;
  hight: 100px;
 }