body {
    font-size: 1em;
    text-align: justify;
    line-height: 1.5;
}

a {
    color: #0000CC;
}

.frontCover {
    qrfullpage: 1;
}

div.tupian {
    width: 100%;
    margin: 1em auto 1em auto;
    text-align: center;
}

p.bodycontent-text {
    text-indent: 2em;
}

p.bodycontent-text_right {
    text-align: right;
}

p.bodycontent-text-tushuo {
    font-size: 0.8em;
    text-align: center;
    margin-top: 0.2em;
}

h1.bodycontent-first-title {
    font-size: 1.6em;
    margin-bottom: 2.5em;
    margin-top: 0.5em;
    text-align: center;
}

h2.bodycontent-second-title {
    font-size: 1.4em;
    margin-bottom: 2.5em;
    margin-top: 1.5em;
    text-align: left;
}

h4, h5, h6 {
    text-align: left;
    text-indent: 2em;
    font-size: 1em;
    margin: 1.0em 0em;
}

h1.kindle-cn-copyright-title {
    font-size: 1.2em;
    text-align: center;
    border-width: 1.5px;
    margin: 0.5em 0em 0.5em 0em;
    border-style: none none solid none;
}

p.kindle-cn-copyright-text {
    line-height: 1.5;
    text-indent: 0em;
}

/* 注释 */
p.zhusi {
    line-height: 1.5;
    text-indent: 0em;
    font-size: 0.8em;
}

p.bodycontent-text_center {
    text-align: center;
    font-weight: bold;
}

p.bodycontent-text_yinwen1 {
    line-height: 1.5;
    text-indent: 2em;
    font-size: 1em;
}

p.bodycontent-text_noindent {
    line-height: 1.5;
    text-indent: 0em;
    font-size: 1em;
}

img.image-alone {
    width: auto;
    margin-bottom: 0.2em;
}

/* 数学上标字体 */  
span.math-super {
    font-size: 0.7em;
    vertical-align: super;
}