help on editing menu bar font size on mobile view

Site URL: https://www.jasmine-noronha.com

hello! trying to figure out the code to edit the size of the font for the menu bar on mobile view ONLY. 

please help! see photo for reference. 

Add to Home > Design > Custom CSS

.mobile-primary-nav-wrapper * {
    font-size: 20px !important;
}

@tuanphan thank you! is there any way to make the list order horizontal rather than vertical? 

@tuanphan i'd also like to place them higher up on the screen and potentially to the right rather than centered. is that possible?

nav.mobile-primary-nav-links {
    display: flex;
    justify-content: center;
}
nav.mobile-primary-nav-links>div:first-child {
    margin-right: 10px;
}