VS CODE EDITOR

This one was very though. so i will list out below why and please my mates do solve my issues. because in the end I couldnt crack out my problems and what i though was to take help from you people. my laptop responsiveness is just perfect and so proud but when it comes to mobile it took me 2 weeks t and still couldnt figure out. 1-when in the laptop minimized screen shows different and in my mobile it shows different and in my sibling's mobile it shows different ,so confusing. 2-when opened in the mobile everything is inside the screen but then i scroll it to theleft why that white empty space. 3-how to hover these instagram facebook and twitter icons. 4-under media query facebook intagram and twitter is positioned to top 303px but still the facebook icon is up. 5-as i mentioned in the first point everything is different in can only see in my mobile when i publish it in github and when look in my phone and again editting in the github again publishing again some mistake again editing .

please help