Add underline to dropdown menu in desktop view.

If you hover over “Portfolios” it has two sub pages. I would like to improve the look of the grey drop down box and add a hover underline when “Brand Portfolio” or “Portraiture Portfolio” are hovered over. You assisted before in providing the following CSS code, which is a great help but does not give me the same thickness and colour as the other menu underlines. @media only screen and (min-width: 75em) { .navigation-classic .main-navigation ul ul a:hover, .navigation-classic .main-navigation ul ul a:focus { text-decoration: underline; } }   For the menu underline CSS, how can I get the same thickness and colour as the other menu underlines? text-decoration-thickness and text-decoration-color? Hex colour is: #e54d39