Replace Hamburger Menu with Call to Action button on Mobile

Site URL: http://www.signatureheadshotsorlando.com

I would like to replace the hamburger menu with a single call to action button on mobile.  Can someone help me with this code?

thank you!

Brian

Add to Design > Custom CSS

@media screen and (max-width:991px) {
.header-display-desktop {
    display: flex !important;
}
.header-display-mobile {
    display: none;
}
.header-burger {
    display: none;
}
.header-nav {
    display: flex !important;
}
.header-nav {
    display: flex !important;
    flex: 30% !important;
    justify-content: flex-end;
    width: 30% !important;
}
.header-title {
    flex: 30% !important;
}
.header-actions, .header-actions-action.header-actions-action--cta {
    display: flex !important;
}
.header-title-nav-wrapper {
    flex: 50% !important;
}
}