Question: This is my [website](http://rupshop.com). It is built with Magento. I want to reduce the left side menu height from 463px to 400px. I tested via Firebug to change the value in the theme-pink.css file. But after editing, when I save the value and open the file again its still unchanged. Did it use any JavaScript script for validating or something else? If so, how can I change this? Please suggest a better option. 

```
.cms-index-index .header-v0 .ver-megamenu-header .sm_megamenu_wrapper_vertical_menu {
  display: block;
  min-height: 463px;

```

Answer: 
The emulator won't open unless you start a session. Clicking Play on Appium simply starts the Appium server. To start a session the simplest way, just click the inspector button (the magnifying glass).
Install driver of your mobile phone. then in Appium Android Settings(click android icon), at Launch Device section, be sure that Launch AVD is **NOT** selected. Also, in Capabilities section select appropriate Platform settings