Hello,

Perhaps this article will help. Although if you want just the asterisk you might have to do some Javascript coding.

https://www.w3schools.com/howto/howto_css_placeholder.asp

Hello Henrique,

You can use the placeholder pseudoclass to change the color of the placeholder text in most modern browsers, but I don't think there's an easy way to change only a part of the text.

The available solutions to solve this look a little clunky to me, so I'd consider if this is something that you must really have in your application - the associated effort to design and maintain something like this for every input in your page is something that should be considered.

Hi @Henrique Querido,

Try this below format to change the placeholder (prompt) color

.ClassName::placeholder
{
    color: #000000;
}

Replace the classname  and the color code with your respective values.

Hope it helps,
Nandhakumar S.