message: Sticker popover styling
diff: @@ -289,8 +289,8 @@ export default class MessageComposer extends React.Component {
  let stickersContent = <p>Click here to add your first sitckerpack</p>;
  if (stickerpackWidget && stickerpackWidget.content && stickerpackWidget.content.url) {
  stickersContent = <iframe src={stickerpackWidget.content.url} style={{
  - borderRadius: '5px',
  border: 'none',
  + height: '160px',
  }}></iframe>;
  }
  @@ -309,12 +309,14 @@ export default class MessageComposer extends React.Component {
  show={this.state.showStickers}
  onHide={this.onHideStickersClick}
  containerStyle={{
  - zIndex: 100,
  + zIndex: 1000,
  }}
  style={{
  borderRadius: '5px',
  width: 'initial',
  padding: 0,
  + overflow: 'hidden',
  + height: '160px'
  }}
  children={stickersContent}
  />
  