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h1 {
margin-top: 4em;
font-weight: normal;
text-align: center;
clear: both
}
h2 {
margin-top: 1em;
margin-bottom: 0em;
font-weight: normal;
text-align: center;
clear: both
}
h3 {
margin-top: 1em;
margin-bottom: 1em;
font-weight: normal;
font-family:serif;
text-align: center;
clear: both
}