nitro-react/src/common/index.scss

.layout-grid-item {
    height: var(--nitro-grid-column-min-height, 45px);
    background-position: center;
    background-repeat: no-repeat;
    background-color: $grid-bg-color;

    &.active {
        border-color: $grid-active-border-color !important;
        background-color: $grid-active-bg-color !important;
    }

    &.unseen {
        background-color: rgba($success, 0.4);
    }

    .avatar-image {
        background-position-y: -35px;
    }
}