<form>
<input type="button" value="見本" onclick="alert("こんにちは");">
</form>
form input[type="submit"] {
margin-top: 10px;
font-family: 'Sofia', cursive, helvetica,arial,sans-serif;
font-size: 125%;
border: none;
padding: 5px 20px;
cursor: pointer;
color: #fff;
text-align: right;
border-radius: 5px;
-webkit-border-radius: 5px;
-moz-border-radius: 5px;
background: #f0a259;
}