xiaoben-as2-php/css/english_reading/basic-treasure.css

.pdf-B5 {
  max-width: 155.7mm;
  font-family: "Times New Roman", "SimSun";
  font-size: 11.5pt;
  padding-left: 6mm;
  padding-right: 6mm;
  color: #030000;
}

.pdf-B5 .topic img {
  width: 100%;
}