body					{ font-family: Arial, Tahoma, Verdana; font-size: 16px; }
h1					{ background-color: #f0f0f0; padding: 16px; margin: 0px; }
pre					{ border: 1px solid #f0f0f0; padding: 16px; margin: 0; }
button				{ height: 36px; font-size: 16px; background-color: #f0f0f0; border: 1px solid #d0d0d0; margin-top: 18px; outline: none; cursor: pointer; }
button:nth-of-type(1)		{ width: 280px; margin-right: 10px; }
button:nth-of-type(2)		{ width: 270px; margin-right: 10px; }
button:nth-of-type(3)		{ width: 180px; margin-right: 10px; }
button:nth-of-type(4)		{ width: 200px; }