I was wondering, is there any official guideline from material design, on how a action moded toolbar should look like? 

For instance, should there be a highlighted line at the bottom of toolbar? Or, should it just be a plain color?

Highlighted line at bottom



Plain color



Note, if we doesn't do any customization, highlighted color at bottom is what we get in Android 5. However, in GMail app, it is using plain color only.


Question: Codeigniter login page missing
Answer: You can check baseurl path (ie, path to your project) whether you have given it correctly in config.php. 
Path to config.php is application/config/config.php or inside system/application/config/config.php 

$config['base_url']    = 'your_project_url'