Adding images to Buttons

Site URL: https://chiton-tarpon-t78k.squarespace.com/

I'm trying to add a mini image to the right of  to my header button text. I'm having issues formatting the text to the left. Also, whenever I refresh the page, the image seems to disappear. 

Here is the CSS I was using:

.white .sqs-block-button-element, .white .image-button a, .white .header-actions .btn {
  background-image: url(https://static1.squarespace.com/static/5ea25216c82a445ce00182bc/t/5ecdcb02410a777ae78e6987/1590545154904/button_image.png);
  background-repeat:no-repeat;
  background-position:94% 50%;
  background-size:17%;
  text-align:left;}

Appreciate any help!

Hi. What is access password?

Hi @tuanphan the password is socialspirits

Thank you in advance for your help!

-Kendall