テキスト<a href="#" class="cp_textlink04">リンクテキスト-link text-</a>テキスト

.cp_block {
	margin: 5em auto;
	text-align: center;
}
.cp_textlink04 {
	position: relative;
	padding: 0.1em 0.3em;
	transition: all 0.3s ease;
	text-decoration: none;
	color: #EC407A;
}
.cp_textlink04::before {
	position: absolute;
	content: '';
	left: 0;
	bottom:0;
	width: 100%;
	height: 1%;
	transition: all 0.3s ease;
	opacity: 0;
	background-color: #EC407A;
	border-radius: 50px;
}
.cp_textlink04::after {
	position: absolute;
	bottom: -1px;
	left: 0;
	width: 100%;
	height: 2px;
	content: '';
	transition: all 0.3s ease;
	border-bottom: 2px solid #EC407A;
	opacity: 1;
}
.cp_textlink04:hover::before {
	height: 100%;
	opacity: 0.4;
}
.cp_textlink04:hover::after {
	left: 50%;
	right: 50%;
	width: 0%;
	opacity: 0;
}