html css上划线

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>上划线示例</title>
    <style>
        .underline {
            text-decoration: underline;
        }
        .double-underline {
            text-decoration: underline double;
        }
        .wavy-underline {
            text-decoration: underline wavy;
        }
    </style>
</head>
<body>
    <p class="underline">单线上划线</p>
    <p class="double-underline">双线上划线</p>
    <p class="wavy-underline">波浪线上划线</p>
</body>
</html>

.underline {
    text-decoration: underline;
    text-decoration-color: red;
}