.tab-group {

}

.tab-container {
    display: none;
}
.tab-container.active {
    display: block;
    border: 1px solid #dee2e6;
    padding: 15px;
}
/*
.tab-buttons {
    border-bottom: 1px solid #dee2e6;
}
*/
.tab-buttons > button {
    margin-bottom: -1px;
    background: 0 0;
    border: 1px solid transparent;
    
    border-top-left-radius: 0.25rem;
    border-top-right-radius: 0.25rem;
}
.tab-buttons > button.active {
    color: #495057;
    background-color: #fff;
    border-color: #dee2e6 #dee2e6 #fff;
}