.nav-tabs {
    border-bottom: 2px solid #222;
}

.tab-content {
    border-top: solid 1px transparent;
    padding: 15px
} 

.nav-tabs >li.active >a {
    color: #555;
    border: 2px solid #222;
    border-bottom-color: transparent;
    margin-bottom: -1px;
}

.nav-tabs > li.active >a:hover {
    background: cyan;
    border: 2px solid #222;
    border-bottom-color: transparent;
}

.nav-tabs>li>a:hover {
    background: cyan;
    border: 2px solid #222;
    margin-bottom: -1px;
}