per completare la domanda i tipi di bordo che puoi applicare ad un bottone o ad un input botton:
codice:
<input type="button" value="Pulsante" name="B3" style="border-style: solid; border-width: 1">
<input type="button" value="Pulsante" name="B3" style="border-style: dotted; border-width: 1">
<input type="button" value="Pulsante" name="B3" style="border-style: dashed; border-width: 1">
<input type="button" value="Pulsante" name="B3" style="border-style: double; border-width: 1">
<input type="button" value="Pulsante" name="B3" style="border-style: groove; border-width: 1">
<input type="button" value="Pulsante" name="B3" style="border-style: inset; border-width: 1">
<input type="button" value="Pulsante" name="B3" style="border-style: outset; border-width: 1"></p>