.grid-scroll {
    max-height: 400px;
    overflow-y: auto;
}

table[id*="gv"] {
    border-collapse: collapse;
    width: 100%;
}

    table[id*="gv"] thead th {
        position: sticky;
        top: 0;
        
        z-index: 10;
    }

    table[id*="gv"] th {
        border-bottom: 2px solid #ccc;
        white-space: nowrap;
    }