.sub-card {
    width: 100%;
    height: calc(100% - 1rem);
}

    .sub-card .e-card-header {
        height: 50px;
        width: 100%;
        background: whitesmoke !important;
        padding: .5rem;
    }

    .sub-card .e-card-content {
        height: calc(100% - 50px);
        overflow: auto;
    }