.popup-background {
  background-color: rgba( 0, 0, 0, 0.3 );
  position: fixed;
  width: 100%;
  height: 100%;
}

.book-popup {
  position: absolute;
  width: 40%;
  background: white;
  border: 3px solid #1e6987;
  border-radius: 15px;
  left: 25%;
  top: 20%;

}
.header{
  background-color: #1e6987;
  border-top-left-radius: 11px;
  text-transform: uppercase;
  color: lightgray;
  font-weight: bold;
  font-size: 13px;
  letter-spacing: 2px;
  padding: 2px 10px;
  overflow: hidden;
}
 .book-popup .content{
   margin: 20px;
 }
.book-popup p {
  margin-bottom: 10px;
}

.popup-button-close {
  position: absolute;
  right: -9px;
  top: -5px;
  cursor: pointer;
  background: white;
  border-radius: 50%;
}
.logo img {
  width: 70%;
}
.a-popup{
  color: white;
  font-weight: bold;
  font-size: 18px;
  padding: 2px 10px;
  display: inline;
  cursor: pointer;
  text-decoration: none;
}
.continue-button{
  background: linear-gradient(to top, #64aed9, #64aed8) ;
  border-radius: 5px;
  border: 3px solid lightgrey;
  height: 55%;
  width: 100%;
  padding-top: 5px;
  padding-bottom: 5px;
  overflow: hidden;
  cursor: pointer;
}
.links {
  color: white;
  font-size: 14px;
  padding: 2px 10px 10px;
  overflow: hidden;
}