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.title1 {font-size: medium; text-align: center; font-weight: bold}
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.title3 {font-size: small; text-align: center; font-weight: bold; font-style: italic}
.title4 {font-size: small; text-align: justify; font-weight: bold; text-decoration: underline}
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.chapter {font-size: x-small; padding-left: 15pt}
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.part1 {font-size: x-small}
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.fig {font-size: small; text-align: justify; font-weight: bold}
.top {font-size: small; text-align: center}
.link {font-size: small; text-align: center}