.k-tabstrip-top > .k-tabstrip-items-wrapper .k-item.k-active, .k-tabstrip-top > .k-tabstrip-items-wrapper .k-item.k-state-active {
    border-bottom-color: transparent;
    background: #CED3DB;
    color: black;
}

.k-popover-callout.k-callout-e {
    top: 50%;
    right: -2px;
    -webkit-transform: translate(50%,-50%) rotate(-45deg);
    -ms-transform: translate(50%,-50%) rotate(-45deg);
    transform: translate(50%,-50%) rotate(-45deg);
    z-index: -1;
    position: absolute;
    border: none;
    box-shadow: none;
    border-right: 2px solid #dee2e6;
    border-bottom: 2px solid #dee2e6;
}