ul ul{list-style-type:none; margin: 0 0 0 1em;padding: 0;}
li{margin-bottom: 5px;}
li.lktitle{color:#006600;font-size:larger ;text-decoration: underline; }

@media screen and (min-width:640px){
 /* for PC*/

 table.tbbook{ width:700px;}
 table.tbbook td.leftp{width:200px ;}
 table.tbbook td.rightp{width:500px;}

}

@media screen and (max-width:640px){
/* for smart phone or Tablet device*/

 table.tbbook{width:90vw; max-width:700px;}
 table.tbbook td.leftp{width:20vw; max-width:200px ;}
 table.tbbook td.rightp{width:70vw; max-width:500px;}

}