center box

I have a text surrounded by a box using CSS, I want the box to be centered but I can’t get it, what I achieve is that the text is centered in the box but it is always aligned to the left.

This is the Style Sheet that I use to make the box.

.frame_background{ text-align: center; width: 75%; padding-left: 20%; border-style: double; border-color: #be660e; }

How do I modify it to center the box?

Text inside the box Greetings