discourse/app/assets/stylesheets/mobile/admin_emojis.scss

.admin-emojis {
  #custom_emoji {
    .select-kit {
      display: none;
    }

    tbody tr th {
      @include ellipsis;

      &:nth-child(2) {
        max-width: 80px;
      }
    }
  }

  .emoji-uploader {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;

    .control {
      margin-bottom: 1em;
      width: 100%;

      input,
      .select-kit {
        width: 100%;
      }
    }

    .upload-container {
      margin: 0;
    }
  }
}