.pdf-single, .pdf-double{
  height: 800px;
  border: 0;
}

.pdf-single{
  width: 90%;
  margin: 10px auto;  
}

.pdf-double{
  width: 50%;
  margin: 10px;
}

.pdf-container{
  width: 97%;
  margin: 0 auto;
  display: flex;
  flex-direction: row;
  background: black;
}