table.singlebook {
  display:inline;
}

table.singlebook td {
  width:290px;
  height:300px;
  padding:20px;
  text-align: center;
  vertical-align: top;
}

div.allbooks {
  text-align: center;
}

div.singlebookcontent {
  text-align: center;
}

div.singlebookdescription {
  text-align: left;
  width: 500px;
  margin-left: auto;
  margin-right: auto;
}

div.onebook {
 margin-left:20px;
 margin-right:20px;
 margin-top:20px;
 margin-bottom:20px;
 width:250px;
 height:300px;
 text-align:center;
 display:block;
 float:left;
 clear: none;
}