#main-wrapper #header-inner.nav-type-2.centered-nav #main-nav a {
    font-size: 19px; /* Adjust the value as needed */
}

body:not(.page-template-presentation-fullwidth) #main-wrapper #main-nav > li > a,
#main-wrapper #header-inner-bg {
    font-size: 18px; /* Adjust the value as needed */
}

#main-wrapper #main-nav > li > a,
#main-wrapper #header-inner-bg {
    font-size: 18px; /* Adjust the value as needed */
}