CSS coding for button font

Site URL: https://www.theirongates.com/

Hello, 

I would like to know if anyone knows the new CSS code for the changing of button fonts.

I have this but doesn't seem to work anymore:

.sqs-block-button-element {font-family: 'MANGO'; text-transform: uppercase;}

Thanks!

Use this

div.button-block * {
	font-family: 'MANGO' !important; 
	text-transform: uppercase;
}