<div class="cp_iptxt">
	<input type="text" placeholder="お名前">
	<i class="fa fa-user fa-lg fa-fw" aria-hidden="true"></i>
</div>
<div class="cp_iptxt">
	<input type="text" placeholder="E-Mail">
	<i class="fa fa-envelope fa-lg fa-fw" aria-hidden="true"></i>
</div>

.cp_iptxt {
	position: relative;
	width: 27.33%;
	margin: 40px 3%;
}
.cp_iptxt input[type='text'] {
	font: 15px/24px sans-serif;
	box-sizing: border-box;
	width: 100%;
	padding: 0.3em;
	padding-left: 40px;
	letter-spacing: 1px;
	border: 0;
}
.cp_iptxt input[type='text']:focus {
	outline: none;
}
.cp_iptxt input[type='text']:focus::after {
	outline: none;
}
.cp_iptxt i {
	position: absolute;
	top: 0;
	left: 0;
	padding: 9px 5px;
	transition: 0.3s;
	color: #aaaaaa;
}
.cp_iptxt::after {
	display: block;
	width: 100%;
	height: 4px;
	margin-top: -1px;
	content: '';
	border-width: 0 1px 1px 1px;
	border-style: solid;
	border-color: #da3c41;
}