@import url("https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css");
@import url("https://fonts.googleapis.com/css?family=Merriweather:400,900,900i" rel="stylesheet");
#back-to-top {
  display: inline-block;
  background-color: #FF9800;
  font-weight: bold;
  color: #fff;
  width: 120px;
  padding: 7px;
  text-align: center;
  border-radius: 4px;
  position: fixed;
  bottom: 30px;
  right: 30px;
  transition: background-color .3s, 
    opacity .5s, visibility .5s;
  opacity: 0;
  visibility: hidden;
  z-index: 1000;
}
/*#back-to-top::after {
  content: "\f077";
  font-family: FontAwesome;
  font-weight: normal;
  font-style: normal;
  font-size: 2em;
  line-height: 50px;
  color: #fff;
}*/
#back-to-top:hover {
  cursor: pointer;
  background-color: #333;
}
#back-to-top:active {
  background-color: #555;
}
#back-to-top.show {
  opacity: 1;
  visibility: visible;
}
.a4landscape {
  width: 700px;
  z-index: 600px !important;
  top: 0;
  left: 0;
}
.a4landscape img {
  max-width: 100%;
}