.dt-chart-frame--open {
  background: transparent;
  border: 0;
  border-block: 1px solid var(--dt-color-border);
  border-radius: 0;
}
.dt-chart-frame--open .dt-chart-frame__toolbar { background: transparent; }
.dt-chart-frame__timeframes button[aria-pressed='true'] {
  background: var(--dt-color-selection);
  color: var(--dt-color-text);
}