criando botão no css code example

Example 1: botoes estilizados css

<a href="#" class="myButton">green</a>

.myButton {
	box-shadow:inset 0px 1px 0px 0px #caefab;
	background:linear-gradient(to bottom, #77d42a 5%, #5cb811 100%);
	background-color:#77d42a;
	border-radius:6px;
	border:1px solid #268a16;
	display:inline-block;
	cursor:pointer;
	color:#306108;
	font-family:Arial;
	font-size:15px;
	font-weight:bold;
	padding:6px 24px;
	text-decoration:none;
	text-shadow:0px 1px 0px #aade7c;
}
.myButton:hover {
	background:linear-gradient(to bottom, #5cb811 5%, #77d42a 100%);
	background-color:#5cb811;
}
.myButton:active {
	position:relative;
	top:1px;
}

Example 2: botoes estilizados css

<a href="#" class="myButton">Quero vender mais</a>

.myButton {
	box-shadow:inset 0px 1px 0px 0px #caefab;
	background:linear-gradient(to bottom, #77d42a 5%, #5cb811 100%);
	background-color:#77d42a;
	border-radius:6px;
	border:1px solid #268a16;
	display:inline-block;
	cursor:pointer;
	color:#306108;
	font-family:Arial;
	font-size:15px;
	font-weight:bold;
	padding:6px 24px;
	text-decoration:none;
	text-shadow:0px 1px 0px #aade7c;
}
.myButton:hover {
	background:linear-gradient(to bottom, #5cb811 5%, #77d42a 100%);
	background-color:#5cb811;
}
.myButton:active {
	position:relative;
	top:1px;
}