|
Menu
×
×
正确
<style>
h1 {
background-color: @(20);
}
</style>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
<style>
h1 {
background-color: rgba(255, 0, 0, 1.0);
}
</style>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
<style>
h1 {
background-color: rgba(255,0,0,1.0);
}
</style>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
<style>
h1 {
background-color: rgba(255, 0, 0, 1);
}
</style>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
<style>
h1 {
background-color: rgba(255,0,0,1);
}
</style>
<body>
<h1>This is a heading</h1>
<p>This is a paragraph</p>
<p>This is a paragraph</p>
</body>
不正确
点击 此处 重试 正确
下一题 ❯
<style>
h1 {
background-color:
|