gristlabs_grist-core/app/client/components/GridView.css

.gridview_data_pane {
  position: relative;
  width: 100%;
  overflow: hidden;
  flex-grow: 1;
  /* make sure that this element is at the back of the stack */
  z-index: 0;

  /* prevent browser selection of cells */
  user-select: none;
  -moz-user-select: none;
  -webkit-user-select: none;
  --gridview-header-height: 2.2rem;
}

.gridview_data_pane.newui {
  --gridview-header-height: 24px;
}

.gridview_data_scroll {
  /* Make it position properly */
  position: absolute;
  height: 100%;
  width: 100%;
  overflow: auto;

  z-index: 2; /* scrollbar should be over the overlay background */
  border-top: 1px solid lightgrey;
}

.gridview_data_pane.newui > .gridview_data_scroll {
  border-top: none;
}

/* ====== Col header stuff */

.gridview_stick-top{
  position: -webkit-sticky;
  position: sticky;
  top: 0px;
  z-index: 2; /* z-index must be here, doesnt work on children*/
}

.gridview_data_header {
  border-bottom: 1px solid lightgray;
  position:relative;
}

.gridview_corner_spacer { /* spacer in .gridview_data_header */
  width: 4rem; /* matches row_num width */
  flex: none;
}

.field.column_name {
  line-height: var(--gridview-header-height);
  height: var(--gridview-header-height); /* Also should match height for overlay elements */
}

/* also .field.column_name, style set in viewCommon */

/* ====== Row stuff */
/* (more styles in viewCommon.css for .field, .record, etc) */

.gridview_row {
  display:flex;
}

.gridview_data_row_num { /* Row nums, stick to the left side */
  position: -webkit-sticky;
  position: sticky;
  left: 0px;
  overflow: hidden;
  width: 4rem; /* Also should match width for .gridview_header_corner, and the overlay elements */

  border-bottom: 1px solid var(--grist-color-dark-grey);
  background-color: var(--grist-color-light-grey);
  z-index: 2; /* goes over data cells */

  padding-top: 2px;
  text-align: center;
  font-size: 1rem;
  cursor: pointer;
}

@media print {
  /* For printing, !important tag is needed for background colors to be respected; but normally,
   * do not want !important, as it interferes with row selection.
   */
  .gridview_data_row_num {
    background-color: var(--grist-color-light-grey) !important;
  }
}

/* ========= Overlay styles ========== */
/* Positioned outside scrollpane, purely visual */

.gridview_data_corner_overlay,
.gridview_header_backdrop_top,
.gridview_header_backdrop_left,
.scroll_shadow_top,
.scroll_shadow_left {
  position:absolute;
  background-color: var(--grist-color-light-grey) !important;
}

.gridview_data_corner_overlay {
  width: 4rem;
  height: calc(var(--gridview-header-height) + 1px); /* matches gridview_data_header height (+border) */
  top: 1px; /* go under 1px border on scrollpane */
  border-bottom: 1px solid lightgray;
  z-index: 3;
}

.scroll_shadow_left {
  height: 100%; /* Just needs to be tall enough to flow off the bottom*/
  width: 0px;
  left: 4rem;
  box-shadow: -6px 0 6px 6px #444;
  /* shadow should only show to the right of it (10px should be enough) */
  -webkit-clip-path: polygon(0 0, 10px 0, 10px 100%, 0 100%);
  clip-path: polygon(0 0, 10px 0, 10px 100%, 0 100%);
  z-index: 3;
}

.scroll_shadow_top {
  left: 0;
  height: 0;
  width: 100%; /* needs to be wide enough to flow off the side*/
  top: calc(var(--gridview-header-height) + 1px); /* matches gridview_data_header height (+border) */
  box-shadow: 0 -6px 6px 6px #444;

  /* should only show below it (10px should be enough) */
  -webkit-clip-path: polygon(0 0, 0 10px, 100% 10px, 100% 0);
  clip-path: polygon(0 0, 0 10px, 100% 10px, 100% 0);
  z-index: 3;
}

.gridview_header_backdrop_left {
  width: calc(4rem + 1px); /* Matches rowid width (+border) */
  height:100%;
  top: 1px; /* go under 1px border on scrollpane */
  z-index: 1;
  border-right: 1px solid lightgray;
}

.gridview_header_backdrop_top {
  width: 100%;
  height: calc(var(--gridview-header-height) + 1px); /* matches gridview_data_header height (+border) */
  top: 1px; /* go under 1px border on scrollpane */
  border-bottom: 1px solid lightgray;
  z-index: 1;
}

.gridview_data_pane.newui > .scroll_shadow_top {
  top: var(--gridview-header-height);
}

.gridview_data_pane.newui > .gridview_data_corner_overlay,
.gridview_data_pane.newui > .gridview_header_backdrop_top {
  top: 0px;
}

/* End overlay styles */

/* ================ Row/col drag styles*/

.col_indicator_line{
  width: 0px;
  height: 100%;
  position: absolute;
  border: 2px solid gray;
  z-index: 20;
  top: 0px;
}

.column_shadow{
  width: 0px;
  height: 100%;
  position: absolute;
  border: 1px solid gray;
  z-index: 15;
  top: 0px;
  background-color: #F0F0F0;
  opacity: 0.5;
}

.row_indicator_line{
  width: 100%;
  height: 0px;
  position: absolute;
  border: 2px solid gray;
  z-index: 20;
  left: 0px;
}

.row_shadow{
  width: 100%;
  height: 0px;
  position: absolute;
  border: 1px solid gray;
  z-index: 15;
  left: 0px;
  background-color: #F0F0F0;
  opacity: 0.5;
  pointer-events: none; /* prevents row drag shadow from stealing row headers clicks */
}

/* Etc */

.g-column-main-menu {
  position: absolute;
  top: 0;
  right: 0;
}


.validation_error_number {
  position: absolute;
  top: -12px;
  right: -12px;
  width: 24px;
  height: 24px;
  padding-top: 10px;
  padding-right: 10px;
  border-radius: 12px;
  text-align: center;
  font-size: 10px;
  font-weight: bold;
  background: red;
  color: white;
}

.column_name.mod-add-column {
  border-right-width: 1px;
  min-width: 40px;
  padding-right: 12px;
}