body{
      background-color:black;
      color:green;
      text-align:center;
      }
                                             
   .edgar{
        background-color: lightgrey;
        width: 800px;
        height:500px;
        border: 25px solid green;
        padding: 30px 25px;
        margin: 28px;
        outline: 25px dotted yellow;
    }
    .problem3{
        background-color: lightgrey;
        width: 800px;
        height:500px;
        border: 25px solid blue;
        padding: 30px 25px;
        margin: 20px dashed red;
    }
    .problem4{
        background-color: lightgrey;
        width: 800px;
        height:500px;
        border: 25px solid red;
        padding: 30px 25px;
        margin: 21px ;
    }
    .problem5 {
        background-color: lightgrey;
        width: 800px;
        height:500px;
        border: 25px solid grey;
        padding: 30px 25px;
        margin: 35px dotted pink;
    }