Open powershell as administrator and run this command. This safely updates your NPM to newest version safely. npm i -g npm Now I will have to update the Node JS version also but this may or may not be in your case You can install NodeJS by downloading and installing...
Position Sticky Sticky positioning is a hybrid of relative and fixed positioning. The element is treated as relative positioned until it crosses a specified threshold, at which point it is treated as fixed positioned. Demo See the Pen Sticky positioning by Šime Vidas...
Here are some CSS reset codes particularly for mobile website development. This might be useful for you if you are using custom code from scratch without using any other UI frameworks like Twitter Bootstrap. CSS Reset *, :before, *:after { / suppressing the tap...
You can use this boolean attribute “hidden” to hide an element from displaying on to the webpage. This attribute can be removed by javascript during some action to display element back. More about this attribute – w3schools.com