finish the basic scroll logic

assets/ts/mobile.ts

@@ -0,0 +1,24 @@
+import { imagesDivNodes as images } from './elemGen'
+import { imagesArrayLen } from './dataFetch'
+
+export const renderImages = (): void => {
+  images.forEach((img: HTMLImageElement, idx: number): void => {
+    const randomX: number = Math.floor(Math.random() * 35) + 2
+    let randomY: number
+
+    // random Y calculation
+    if (idx === 0) {
+      randomY = 68
+    } else if (idx === 1) {
+      randomY = 44
+    } else if (idx === imagesArrayLen - 1) {
+      randomY = 100
+    } else {
+      randomY = Math.floor(Math.random() * 51) + 2
+    }
+
+    img.style.transform = `translate(${randomX}vw, -${randomY}%)`
+    img.style.marginTop = `${idx === 1 ? 70 : 0}vh`
+    img.style.visibility = 'visible'
+  })
+}