ServerSideSkittles questions

• PHP undefined index on array lookup
• Animate CSS Gradient in Bootstrap nav
• Nginx remove port number :8080 in the url
• CSS fadein fadeout onclick
• Uncaught ReferenceError: url is not defined
• Jquery $(this) not working inside function
• HTML5 <picture> srcset fallback for IE 10 and 11
• Pass data through to the view in Express
• Strip whitespace from associative array Keys
• Sendgrid not sending text to new line

ServerSideSkittles answers