discourse/app/assets/stylesheets/common/select-kit/period-chooser.scss

.select-kit {
  &.dropdown-select-box {
    &.period-chooser {
      display: inline-flex;
      position: relative;

      .select-kit-collection {
        padding: 5px;
      }

      .period-chooser-header {
        background: none;
        border: none;
        justify-content: flex-start;
        width: auto;
        height: auto;
        padding: 0;

        h2.selected-name {
          color: var(--secondary);
          display: inline-block;
          box-sizing: border-box;

          .date-section {
            color: var(--primary);
            margin-right: 5px;
          }

          .top-date-string {
            font-size: $font-down-1;
            color: var(--primary-med-or-secondary-high);
            font-weight: normal;
            text-transform: uppercase;
          }
        }

        .d-icon {
          color: var(--primary);
          opacity: 1;
          margin: 5px 0 10px 5px;
          font-size: $font-up-3;
        }

        &.is-focused,
        &:hover {
          background: none;
          border: none;
          outline: none;
        }
      }

      .period-chooser-row {
        font-weight: bold;
        padding: 5px;
        font-size: $font-up-1;
        align-items: center;
        display: flex;

        .period-title {
          flex: 1 0 0px;
        }

        .date-section {
          color: var(--primary);
        }

        .top-date-string {
          font-weight: normal;
          font-size: $font-down-1;
          color: var(--primary-med-or-secondary-high);
          text-transform: uppercase;
          margin-left: 5px;
        }
      }
    }
  }
}