<meta name="viewport" content="width=device-width, initial-scale=1.0" /> Setting the viewport to make your website look good on all devices: onkeypress="funct...

BootStrap container mt-4: container/container-fluid, margin-top 5 container display-4 text-center: 4 types of displaying headings display-4 form-control/form-group: inline, horizontal, v...

1.Input/Output Using "fs" module var input = require("fs").readFileSync('/dev/stdin').toString().split(' '); require("fs"): using "fs" module readFi...