body{
  margin:0px;
  padding: 0.5em;
  background-color:white;
  font-size:12px;
  font-family:Arial, Helvetica, sans-serif;
}
.calibreMain{
  display: flex;
}
.calibreMeta{
  background-color:#39322B;
  color:white;
  padding:10px;
    display: none; 
}

.calibreMeta a, .calibreEbNav a, .calibreEbNavTop a, .calibreToc a{
  color:white;
}

.calibreMeta h1{
  margin:0px;
  font-size:18px;
  background-color:#39322B;
}

.calibreEbookContent{
  padding:20px;
}

.calibreEbNav, .calibreEbNavTop{
  clear:both;
  background-color:#39322B;
  color:white;
  padding:10px;
  text-align:center;
    display: none; 
}

.calibreEbNavTop{
  margin-bottom:20px;
}

.calibreEbNav a, .calibreEbNavTop a{
  padding:0px 5px;
}

.calibreTocIndex{
  line-height:18px;
}

.calibreToc{
  margin:20px;
  background-color:#588e32;
  color:white;
  padding:10px 30px;
  height: 100%;
 /* 新增粘性定位 */
  position: sticky;
  top: 0;          /* 当滚动到顶部0像素时开始固定 */
  z-index: 1000;
  
}
.calibreEbookContent{
  margin-left: 50px;
}