Hey Jeena,
geht das?
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head xmlns="http://www.w3.org/1999/xhtml" xml:lang="de" lang="de">
<meta http-equiv="content-type" content="text/html;charset=ISO-8859-1">
<title></title>
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<style type="text/css">
dd, dt {
display: inline;
}
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<body>
<dialog>
<div>
<dt>Jeena [10:55]:</dt>
<dd>Hallo hier bin ich</dd>
</div>
<div>
<dt>Peter [10:58]:</dt>
<dd>Und willkommen bei mir, ich bin der Peter</dd>
</div>
</dialog>
</body>
</html>