看看你的标签，我假设你写的是...... ...

Looking at your tags, I'm assuming you are writing something like...

<input type="text" placeholder="whatever">

不幸的是，当涉及到占位符的样式时，Chrome会牵制你的手，选择器看起来像这样。 。

Unfortunately, Chrome ties your hands when it comes to styling the placeholder, the selector looks like this...

input::-webkit-input-placeholder {}

您可以在为HTML占位符设置样式