Can not apply CSS style to border

Vladislav Grin

Hello!
I have added Deck of Cards to my page and CSS stylesheet.
In CSS stylesheet I wrote next code to visually hide the top border of Deck of Cards.

.aui-tabs.horizontal-tabs>.tabs-menu~.deck-cards {
 border-top: 1px solid #FFFFFF !important;
}

When I try to see "preview" of the page Confluence shows me Deck of Card without of border, but after I press save porder appears on the page.
You can find screens of trouble below.

Help me please to solve this trouble.

Thank you in advance!

Vladislav Grin

Hi once more.

My trouble is solved, I have found a solution.

Unfortunately Confluence change ">" sign into "&gt". To solve such things I replaced ">" with " :nth-child(n)" and it works well. 

Hope it would be helpful for some one.