URL: https://m.traveloka.com/en-id/flight

Browser / Version: Firefox Mobile 62.0
Operating System: Android 7.0
Tested Another Browser: Yes

Problem type: Design is broken
Description: The City selection page slightly bounces after opening
Steps to Reproduce:

1. Visit the site
2. Tap on either the Departure City or Destination list. In this case, the defaults are "Jakarta (JKTA)" and "Bali / Denpasar (DPS)" respectively
3. This opens a selection of cities. After the opening animation is finished, the page slightly moves down and returns to normal.

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