.content {
    font-family: "汉仪旗黑50S","HYQiHei-50s";
    font-size: 1em;
    text-indent: 2em;
    text-align: justify;
}

.frontCover {
    qrfullpage: 1;
}

body {
    font-size: 1em;
    text-align: justify;
    line-height: 1.618em;
}

p {
    text-indent: 2em;
}

p.kindle-cn-copyright-text {
    line-height: 1.618em;
    text-indent: 0em;
}

:lang(ja) {
    font-family: TBGothic, TBMincho, TBGothic, HYGothic, TsukushiMincho;
}

p.kindle-cn-ref {
    margin: 0em 1em 0em 1em;
    font-family: STKai, "MKai PRC", Kai,"楷体";
}

p.kindle-cn-kai {
    font-family: STKai, "MKai PRC", Kai,"楷体";
}

 
h1.preface-title-c {
    font-size: 1.8em;
    font-weight: bold;
    line-height: 1.2em;
    margin-top: 100px;
    text-align: center;
}

h1.title-1-c {
    font-size: 1.8em;
    line-height: 1.2em;
    font-weight: bold;
    margin-top: 100px;
    text-align: center;
}

h3.title-3-c {
    font-size: 1.3em;
    line-height: 1.2em;
    font-weight: bold;
    text-align: center;
}

div.kindle-cn-bodycontent-div-alone100 {
    width: 100%;
    text-align: center;
    margin-top: 1em;
    margin-bottom: 1em;
    text-indent: 0;
}

img.kindle-cn-bodycontent-image-alone80 {
    width: 80%;
}

img.kindle-cn-bodycontent-image-alone40 {
    width: 40%;
}

p.kindle-cn-picture-txt-withfewcharactors-1 {
    font-size: 0.85em;
    font-family: STKai, "MKai PRC", Kai,"楷体";
    text-align: center;
    margin-bottom: 0.5em;
    text-indent: 0;
}

span.kindle-cn-bold {
    font-weight: bold;
}

span.kindle-cn-italic {
    font-style: italic;
}

span.math-super {
    font-size: 0.7em;
    vertical-align: super;
}

p.kindle-cn-para-left-2 {
    text-align: left;
    font-size: 1.2em;
    text-indent: 2em;
    font-weight: bold;
}

p.kindle-cn-para-right {
    text-align: right;
}

p.kindle-cn-para-align-center {
    text-align: center;
    font-size: 1.2em;
    text-indent: 0em;
}

span.kaiti {
    font-family: STKai, "MKai PRC", Kai,"楷体";
}