要禁用元素内的文本换行，请使用空白属性。您可以尝试运行以下代码来实现空白属性
<!DOCTYPE html>
<html>
<head>
<style>
p {
white-space: nowrap;
}
</style>
</head>
<body>
<p>
This is demo text. This is demo text.
This is demo text. This is demo text.
This is demo text. This is demo text.
This is some text. This is demo text.
</p>
</body>
</html>