<!DOCTYPE html>
<html lang="ja">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>.arrow-explain2 {
position: relative; /* 追加 */
width: 60px;
height: 20px;
margin-right: 30px; /* 追加 */
color: #0000cc;
background: currentColor;
top: 30px; /* 追加 */
}
.arrow-explain2:after {
content: "";
position: absolute;
top: 50%;
transform: translateY(-50%);
left: 100%;
width: 0;
height: 0;
border: 30px solid currentColor;
border-top-color: transparent;
border-right-color: transparent;
border-right-width: 0;
border-bottom-color: transparent;
}</style>
</head>
<body>
<html lang="en">
<body>
<div class="arrow-explain2">
</div>
<script>
</script>
</body>
</html>