#product .tabs .nav-tabs .nav-item{
    width: 100%;
    margin: 0;
}

#product .tabs .nav-tabs .nav-link{
    padding: 20px;
    width: 100%;
    border: 1px solid lightgray;
}

#product .tabs .nav-tabs .active{
    border-right: none;
}

#product .tabs{
    padding-left: 0;
    padding-top: 0;
}

#product .tabs>div{
    padding-left: 0;
    padding-top: 0;
}

#product .tabs .nav-tabs .nav-link.active, .tabs .nav-tabs .nav-link:hover{
    border-bottom: none;
}