.vertical-grid-container {
    overflow: scroll;
}
.vertical-grid th, .vertical-grid td {
    vertical-align: middle;
}
.vertical-grid thead th {
    position: -webkit-sticky; /* for Safari */
    position: sticky;
    top: 0;
    background-color: #ffffff;
    background-clip: padding-box;
    z-index: 1;
}
.vertical-grid tbody th {
    position: -webkit-sticky; /* for Safari */
    position: sticky;
    left: 0;
    background-color: #ffffff;
    background-clip: padding-box;
}
.vertical-grid thead th:first-child {
    left: 0;
    z-index: 2;
}
.vertical-grid tbody th:first-child {
    left: 0;
    z-index: 1;
}
.btn-vertical-grid {
    width: 100px;
}