body {
  font-family: Arial, sans-serif;
  margin: 0;
  background: rgba(0, 0, 0, .7);
  color: #e9e9e9;
}

div, header {
  width: 80%;
  margin: 20px auto;
  border: 3px solid rgba(108, 131, 3, 0.582);
  background: rgba(0, 0, 0, 0.7);
  padding: 16px;
  box-sizing: border-box;
}

div {
  min-height: 250px;  
}

h1, h2 {
  text-align: center;
  color: rgba(255, 4, 4, 0.699);
  margin: 8px 0 12px;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border: 1px solid #555;
  margin-bottom: 10px;
}

#background .bg-box {
  height: 460px;  
  margin-top: 10px;
  border: 1px solid #ccc;
  background: url("../images/aurora-borealisafter.jpg") center / cover no-repeat;
}

.left-img {
  float: left;
  width: 200px;
  margin: 0 15px 10px 0;
}

.right-img {
  float: right;
  width: 200px;
  margin: 0 0 10px 15px;
}

#float-left, #float-right { overflow: auto; }

#img-map {}
#picture-tag {}
#linked-image {}
#img-as-link {}