CodePen Embed - PoowaEq

<p class="u-line">テキストに下線を付けます</p>

<p class="line">テキストに下線を付けます</p>

<p><span class="line">下線</span>をつけようと思います</p>

.u-line {
  text-decoration: underline;
}

.line {
	position: relative;
  display: inline-block;
}

.line::before {
	position: absolute;
	bottom: 0;
	left: 0;
	width: 100%;
	height: 1px;
	background: #000;
	content: '';
}

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