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正确
<style>
h1 {
@(11): 20px;
}
</style>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
<style>
h1 {
margin-left: 20px;
}
</style>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
不正确
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下一题 ❯<style> h1 {w3exercise_input_no_0: 20px; } </style> <body> <h1>This is a heading</h1> <p>This is a paragraph</p> <p>This is a paragraph</p> </body> |