.door {
width: 130px; 
height: auto;
margin:20px;
}

.door-warning {
width: 140px; 
height: auto;
margin: 0px 20px 20px 20px;
}


.back {
    font-size: 20px;
    display:inline;
    padding: 8px;
    background-color: #9ef0f0;
    border: solid 4px;
    border-style: double;
    border-color: black;
    margin-left:10px;
}

a:link {
  color: #004201;
}

a:active {
  color: red;
}