h1 {
  font-weight: normal;
}

body {
    background-color: whitesmoke;
}

.modal {
  background-color: rgba(0,0,0,0.4); /* Transparent dimmed overlay */
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: table;
}

.modal.hidden {
  display: none;
}

.modal .container {
 display: table-cell;
 text-align: left;
 vertical-align: middle;
 width: 200px;
}

.modal .body {
  box-shadow: 5px 10px #888888;
  display: inline-block;
  background-color: whitesmoke;
  border: 1px solid black; 
  padding: 50px;
    margin:100px;
    
}