.nav-tabs{
    border-bottom: 4px solid #f2f2f2;
}

.nav-tabs .nav-item{
    margin-bottom: -4px;

}


.nav-tabs .nav-link{
    color:#000;
    border-right: 0;
    border-left: 0;
    border-top: 0;
}

.nav-tabs .nav-link:focus,
.nav-tabs .nav-link:hover{
    border-color: transparent;
    border-bottom-width: 4px;
}

.nav-tabs .nav-item.show .nav-link,
.nav-tabs .nav-link.active,
.nav-tabs .nav-link:hover{
    border-color: transparent transparent #e2001a;
    border-bottom-width: 4px;
}