.box {
    height: 400px;
    padding: 20px;
    color: #fff;
    background: deepskyblue;
  }
  
  .margin-top-80 {
    margin-top: 80px;
  }
  
  .page-header{
    margin-top:0px;
    margin-bottom:20px;
    border-style:none;
    color:teal;
  }
  
  .collapse navbar-collapse{
    border-style:none;
  }
  
  #navbarSupportedContent{
    border-style:none;
  }
  
  .dropdown-item{
    color:teal;
    border:none;
  }
  
  #navolink{
    color:teal;
  }
  
  #indexlink{
    color:maroon;
  }
  
  .container-fluid,.row,.col-md-2{
    border:none;
  }

  #repolink{
    text-align:center;
    color: #fff;
    background-color:teal;
  }

  #repolink{
    background-color:teal;
    color:white;
    text-align:center;
  }

  .col-md-3{
    background-color: black;
    border:none;
  }