Button spacing fix on newsletter section

I want to get all button spacing styles the same on the site.

The height seems a lot more on the newsletter. The 'logo + book your call' screenshot attached shows the button style I want the newsletter 'Sign me up" button to be.

The button in "style" = "bright" using the primary button (which I am using throughout the site without spacing issues).
I have tried in styles but I think all my buttons in site use 'primary' - this newsletter button is just behaving/appearing differently.

Thank you kindly in advance.

https://www.nicolacross.com/

Also,  the code I have that works for all my other buttons changing to gold on hover and colouring in the border with gold isn't working for this 'newsletter' button as pictured.

//Change button hover & border colours//
.sqs-block-button-element:hover {background-color: #876B0B!important;
border: 1px solid #876B0B;
 color: #fff !important;}

.sqs-button-element--primary:hover {background-color: #876B0B!important;
border: 1px solid #876B0B;
 color: #fff !important;}

.sqs-button-element--secondary:hover {background-color: #876B0B!important;
border: 1px solid #876B0B;
 color: #fff !important;}

.sqs-button-element--tertiary:hover {background-color: #876B0B!important;
border: 1px solid #876B0B;
 color: #fff !important;}

Thank you kindly in advance

I have tried this for the button hover but it is not working...

//Change testimonial button hover border to gold//
section[data-section-id="66ba162c83a676735b68e0d5"] .sqs-block-button-element:hover 
{background-color: #876B0B !important;
border: 1px solid #876B0B !important;
 color: #fff !important;}

I have fixed the newsletter button hover colour with this:

//newsletter button hover colour//
@media (max-width: 767px) {  
    .primary-button-style-outline .fluid-engine .newsletter-form .newsletter-form-body .newsletter-form-button:hover {
        border: #876B0B!important;}
}

I am still looking for a fix for the button spacing as seen in initial post of this request.

Is there anyone out there who can help with this?

Thank you so much