header {
     background-color: #2c3e50;
     color: white;
     padding: .5rem;
     text-align: center;
     margin-bottom: 32px;
     margin-top: 0px;
     border-bottom-left-radius: 20px;
     border-bottom-right-radius: 20px;
 }

 body {
     font-family: Arial, Helvetica, sans-serif;
     font-size: 14px;
     line-height: 1.4;
     background-color: #f4f4f9;
     color: #333;
     padding-left: 16px;
     padding-right: 16px;
     padding-top: 0px;
 }

 footer {
     position: fixed;
     bottom: 0;
     left: 0;
     width: calc(100% - 32px);
     background-color: #333;
     color: #fff;
     text-align: center;
     margin-left: 16px;
     margin-right: 16px;
     border-top-left-radius: 20px;
     border-top-right-radius: 20px;
 }


 div {
     border: solid;
     border-color: #2c3e50;
     border-width: 2px;
     border-radius: 10px;
     padding-left: 8px;
     padding-right: 8px;
 }