* {
    box-sizing: border-box;
  }
.header {
    padding: 30px;
    font-size: 40px;
    text-align: center;
    background: #1CBCB5;
  }
body {
    font-family: Arial;
    padding: 20px;
    background: #f1f1f1;
  }
.leftcolumn {   
    float: left;
    width: 65%;
  }
.rightcolumn {
    float: right;
    width: 35%;
    padding-left: 20px;
  }
.card {
     padding: 20px;
     margin-top: 20px;
	 text-align: center;
  }
.row:after {
    content: "";
    display: table;
    clear: both;
  }
.footer {
    padding: 20px;
    text-align: center;
    background: #ddd;
    margin-top: 20px;
  }
nav.sitenav {
    color: #367A11;
    text-align: center;
  }

  nav.sitenav p {
    display: inline-block;
    margin: 0.5em;
  }

  nav.sitenav a:hover, nav.sitenav a:focus {
    color: #ffffff;
  }

  a:link {
    color: black;
  }

  a:visited {
    color: #784411;
  }

  a:active {
    position: relative;
    top: 1px;
    left: 1px;
  }

  nav.sitenav a:link {
    text-decoration: none;
    color: #210F90
  }
img, object, iframe, video {
    max-height: 100%;
    max-width: 100%;
  }
@media screen and (max-width: 800px) {
    .leftcolumn, .rightcolumn {   
      width: 100%;
      padding: 0;
    }
  }
.prevent-select {
  user-select: none;
  -webkit-user-select: none; 
  -khtml-user-select: none; 
  -moz-user-select: none; 
  -ms-user-select: none;
}