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//getting the viewport dimensions
var width= Math.max(document.documentElement.clientWidth, window.innerWidth || 0);
var height = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);
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// viewport dimention
const vw = Math.max(document.documentElement.clientWidth || 0, window.innerWidth || 0);
const vh = Math.max(document.documentElement.clientHeight || 0, window.innerHeight || 0);
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let viewportHeight = window.innerHeight;
let viewportWidth = window.innerWidth;
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const vw = Math.max(document.documentElement.clientWidth || 0, window.innerWidth || 0)
const vh = Math.max(document.documentElement.clientHeight || 0, window.innerHeight || 0)