stylesheet.css

<style>

body { 
	-webkit-text-size-adjust: none; 
}

/* containers */
.container-btn {
	margin-top: 15px;
	margin-bottom: 15px;
	margin-left: 10%;
}


/* button */
a.btn {
	border: 1px;
	border-radius: 5px;
	padding-left: 10px;
	padding-right: 10px;
	padding-top: 5px;
	padding-bottom: 5px;
	/*font-weight: bold;*/
	text-decoration: none;
}

#yes {
  	background-color: #32720c;
	color: #ffffff;
}

#no {
  	background-color: #bc341c;
	color: #ffffff;
}

</style>