Style first item

Can you tell me how to style the first item only.

I want to override CSS for background and font for first item (level 0) only using vertical mega menu.

Dear lownotes.
Thank you for using product our,
Please give me link your site, I will check it for you.

181.224.155.75/~sandbox/requiem/

Here is a link to test menu at the top, red box.

I would like the Level 0 menu to have transparent box with dotted border, dark grey text. The rest of the menu can stay red.

Thank you!

Hi Lownotes
You can did the below
Go to modules/mo_jux_megamenu/asets/css/style/red.css line 85

#megamenucss .red.megamenu ul.level0 > li.megacss:hover > a.megacss,
#megamenucss #js-mainnav.megamenu.red ul.level0 li.active{
background from background: rgb(197, 24, 24)!important;
color: #ffffff!important;
}
edit background from background: rgb(197, 24, 24)!important; to background: transparent!important;

Go to line 93
#megamenucss #js-mainnav.red .js-megamenu{
background: #9B1200;!important;
}
edit background: #9B1200;!important; to background:transparent;!important;

Go to line 11
#js-mainnav.megamenu.red {
background: #9B1200 url('../../images/grad1-mask.png') repeat-x top; /* you can change/delete the transparent gradient image or the background color */
}
edit background: #9B1200 url('../../images/grad1-mask.png') repeat-x top; to background:transparent;
If you still didn't done. You can give me your account of the administrator via private message. I will help you.
The result when edit code line, please view image attachment.

Huyen Tran