<div class="header">
		<button type="button" class="button">추가</button>
</div>
.header {
	position: relative;
	background: #00bcd4;
	height: 49px;
	padding-left: 10px;
	color: #fff;
	font-weight: bold;
	line-height: 49px;
	font-size: 30px;
}

.header .button {
	width: 28px;
	height: 28px;
	padding: 0;
	background-image: linear-gradient(transparent 9px, #fff 9px, #fff 11px, transparent 11px), linear-gradient(90deg, transparent 9px, #fff 9px, #fff 11px, transparent 11px);
	background-repeat: no-repeat;
	background-color: #5a5a5a52;
	background-clip: content-box;
	border-radius: 50%;
    border: 4px solid #5a5a5a52;
	vertical-align: middle;
	font-size: 0;
	color: transparent;
}

External CSS

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External JavaScript

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