metamask-extension/ui/app/components/transaction-list-item/index.scss

.transaction-list-item {
  box-sizing: border-box;
  min-height: 74px;
  padding: 8px 20px;
  display: grid;
  grid-template-columns: 45px 1fr 1fr 1fr;
  grid-template-areas:
    "identicon action status primary-amount"
    "identicon nonce status secondary-amount";
  border-bottom: 1px solid $geyser;
  cursor: pointer;

  @media screen and (max-width: $break-small) {
    padding: 8px 20px 12px;
    grid-template-columns: 45px 5fr 3fr;
    grid-template-areas:
      "nonce nonce nonce"
      "identicon action primary-amount"
      "identicon status secondary-amount";
  }

  &__identicon {
    grid-area: identicon;
    grid-row: 1 / span 2;
    align-self: center;

    @media screen and (max-width: $break-small) {
      grid-row: 2 / span 2;
    }
  }

  &__action {
    text-transform: capitalize;
    padding: 0 8px 2px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    grid-area: action;
    align-self: end;
  }

  &__status {
    grid-area: status;
    grid-row: 1 / span 2;
    align-self: center;

    @media screen and (max-width: $break-small) {
      grid-row: 3;
    }
  }

  &__nonce {
    font-size: .75rem;
    color: #5e6064;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    grid-area: nonce;
    align-self: start;

    @media screen and (max-width: $break-small) {
      padding-bottom: 4px;
    }
  }

  &__amount {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;

    &--primary {
      text-align: end;
      grid-area: primary-amount;
      align-self: end;

      @media screen and (max-width: $break-small) {
        padding-bottom: 2px;
      }
    }

    &--secondary {
      text-align: end;
      font-size: .75rem;
      color: #5e6064;
      grid-area: secondary-amount;
      align-self: start;
    }
  }


  &:hover {
    background: rgba($alto, .2);
  }
}