body { padding: 50px;
  font: 14px "Lucida Grande", Helvetica, Arial, sans-serif;
  background-color: #170f2f;
  color: bisque;
  /* Full height */
  height: 100%;

}

a {
  color: #00B7FF;
}
.btn-file {
  cursor: pointer;
}
.btn-file input[type=file] {
  position: absolute;
  top: 0;
  right: 0;
  min-width: 100%;
  min-height: 100%;
  font-size: 100px;
  text-align: right;
  filter: alpha(opacity=0);
  opacity: 0;
  outline: none;
  background: white;
  display: block;
}
.box{
  border: solid #7f8049 3px;
  height: 500px;
  max-width:750px;
}