Steven Bryant

my suggestion is . you can use xampp.

you file keep in right file. in htdocs file.

At first look you probably won’t see an easy way to change the text color. This is because, for some reason, the developers of WordPress decided to hide this feature. Here is how to get to it.
In your WordPress dashboard go to the Posts section and click on the post you want to edit.
Once you are on the post editor screen click the Toolbar Toggle button just about .
This will bring up some extra options in the toolbar above your post. One of these options is a Text color drop-down box.

Changing your text size follows a process similar to the one we used to change the text color. This one is a little more complicated though. Here is how to do it:
In your WordPress dashboard go to the “Posts” section and click on the post you want to edit.
Once you are on the post editor screen click the Toolbar Toggle button just about your post.
In addition to changing text size and color, when you click the “Toggle toolbar” button you will see some other new features. These include useful things like underlined text and indentations, so keep the Toggle toolbar button in mind in case you need to use these features in the future.
you install WordPress plugin this is easy way .

Yes, you can add CSS to your themes style-sheet to accomplish this. I think appearance is something that should be taken care of inside of your theme files and that is.

.button, input[type=”submit”] {
background: yellow;
}