#books {margin:0 auto; padding-top:2px; width:40%; min-width:240px;}

@media screen and (orientation:portrait) {
	#books {width:80%;}
}

.tt p {font-size:1.5em; color:#fffffe; background-color:#600000; padding-left:0; margin-top:0;}
.ttx {white-space: pre; border-top: 3px double #800;}
.bb {clear:both; width:100%; border-bottom:1px solid #aaa;}
.bb p {font-size:1.25em; padding-left:0.5em;  margin:0 auto;  }
/*.bb:nth-child(2n) p {color:#000088;}
.bb:nth-child(2n+1) p{color:#4444cc;}*/
.english .bb p span.english {font-family:helvetica,sans-serif,Arial;}
.chgrid {display:none; margin-bottom:1.5em; overflow:hidden; margin:0 0 0 1em; }

.chgrid .ch {font-family:helvetica,sans-serif,Arial; font-size:1.2em;width:2em; height: 1.6em; border:1px solid blue; float:left; margin:2px; text-align:center;padding-top:0.5em;}

.noshow {display:none;} 
.show {display:block;}