div.btn_23,a.btn_23 {
	display: block;
	text-align: center;
	vertical-align: middle;
	text-decoration: none;
	width: 80%;
	margin: auto;
	padding: 10px;
	font-weight: bold;
	border: 2px solid #27acd9;
	color: #27acd9;
	cursor: pointer;
	position: relative;
 	overflow: hidden;
 	z-index: 1;
}
div.btn_23::before, a.btn_23::before {
	content: "";
	position: absolute;
	left: 0;
	top: 0;
	width: 100%;
	height: 100%;
	background-color: rgb(39, 172, 217);
	transform: translateX(-100%);
	transition: all .3s;
	z-index: -1;
}
div.btn_23:hover::before, a.btn_23:hover::before {
	transform: translateX(0);
}
div.btn_23:hover ,a.btn_23:hover {
	color: #fff;
}