fleet/frontend/components/SidePanelContent/_styles.scss

.side-panel-content {
  background-color: $core-white;
  box-sizing: border-box;
  border-left: 1px solid $ui-gray;
  min-width: $sidepanel-width;
  width: $sidepanel-width;
  padding: $pad-xxlarge;
  // need relative positioning for a close icon that is on some sidebars have
  position: relative;

  .component__tooltip-wrapper__tip-text {
    max-width: 280px;
  }
}