[Theme Horse Support Team]

Hi Chaimongkol,

For this you have to edit the css code. Go to Appearance -> Customize/Theme Options -> Design Options Tab -> Custom CSS paste the following CSS code and Click on save button:

#access li {
    padding: 0;
}
#access a {
    padding: 16px 10px 0;
}
#access a:hover,
#access ul li.current-menu-item a,
#access ul li.current_page_ancestor a,
#access ul li.current-menu-ancestor a,
#access ul li.current_page_item a,
#access ul li:hover > a,
#access ul li ul li a:hover,
#access ul li ul li:hover > a,
#access ul li.current-menu-item ul li a:hover {
    background-color: #05a9c5;
    color: #fff;
}

Replace the above HEX color code #05a9c5 and #fff to your own HEX color code for the block menu and for the color of font.

Thank you!