Removing hamburger menu from mobile, stack links

Hi, my site https://cowbell-watermelon-c4g2.squarespace.com/ (password is coffee) only has 3 navigation links, and instead of having a hamburger menu on mobile, I would like to "stack" the 3 links on top of each other. Is this possible?

The site url doesn't exist. Can you check it again?

16 minutes ago, tuanphan said:

The site url doesn't exist. Can you check it again?

Sorry, it's now therista.squarespace.com

Add to Design > Custom CSS or Website > Website Tools > Custom CSS

/* Force desktop nav */
@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: 70% !important;
    justify-content: flex-end;
}
.showOnDesktop .header-actions-action.header-actions-action--cart {
    display: none;
}
    .header-title-nav-wrapper {
    max-width: 65% !Important;
}
}