Cart button in article - How to align it on center

-- HikaShop version -- : latest

Hi All,
i know this question in very easy, but i really can't solve this issue!

I put a cart in article. (Code works perfectly).
But the button is float/align on right! I'd like the button goes on center.
How can i do this?
I've tried this code but it doesn't work!

input.btn,
.btn {
  color: #ffffff !important;
  background: #323a46 !important;
  border: 1px solid #29303a !important;
  -webkit-transition: all 0.2s ease-in;
  -moz-transition: all 0.2s ease-in;
  -o-transition: all 0.2s ease-in;
  transition: all 0.2s ease-in;
  border: 0;
  align-items: left!important;
}

Hello Andrea,
You'll be able to do that by using some CSS code : www.hikashop.com/support/documentation/1...the-display.html#css
If you can't do it, a link to the page where you are having your issue will probably useful.

Hi Mohamed,
thanks for your reply.

I've tried but i did't solve it.
I don't want put the link here. How can i send it?

Thanks in advance

Andrea