body{
  background-color: rgb(129,196,238);
  position: relative;
  font-size: 1em;
}
div{
  text-align: center;
}
a{
  text-decoration: none;
  color: black;
}
.card{
  background-color: white;
  border-radius: 1em ;
  min-width: 200px;
  min-height: 300px;
  width: 30%;
  height: 40%;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  margin: auto;
}
.author-image{
  width: 100px;
  margin: auto;
  display: block;
  border-radius: 50%;
}
#ref{
  margin: auto;
  position: absolute;
  bottom:0;
  left: 0;
  right: 0; 
  color: grey;
}