JavaScript for the absolutely positioned layout built for

absoluteLayoutJS.js

document.addEventListener('DOMContentLoaded', () => {
  setPlatformInfo();
  var inputBox = document.querySelector('.safari #inputBox');
  if(inputBox) {
    inputBox.addEventListener('focus', function(e) {
      document.body.classList.add('keyboard');
      setTimeout(function() {
          window.scrollTo(0, 0);
      }, 200);
    });
    
    inputBox.addEventListener('blur', function(e) {
      document.body.classList.remove('keyboard');
    });
  }
});

function setPlatformInfo() {
  var ua = navigator.userAgent.toLowerCase(); 
  if (ua.indexOf('safari') != -1) { 
    if (ua.indexOf('chrome') > -1) {
      document.body.classList.add('chrome');
    } else {
      document.body.classList.add('safari');
    }
  }
}