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HTML 

              
                <div class="app">
  <div class="cover-image">
    <div class="cover-image__overlay"></div>
    <div class="cover-image__text">
      <div class="cover-image__name">Taha Shashtari</div>
      <div class="cover-image__tweets">12K Tweets</div>
    </div>
    <img
      class="cover-image__image"
      src="https://images.unsplash.com/photo-1525547719571-a2d4ac8945e2?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=800&q=80"
      alt=""
    />
  </div>
  <div class="header">
    <div class="header__content">
      <img
        src="https://tahazsh.com/images/taha.jpg"
        class="header__profile-image"
      />
      <div class="header__user">
        <h1 class="header__user-name">Taha Shashtari</h1>
        <span class="header__user-handle">@tahazsh</span>
      </div>

      <p class="header__bio">
        Hey everyone! I'm really excited to share this demo that I built. If you want to keep up with my latest work, feel free to follow me on Twitter <a href="https://twitter.com/tahazsh" rel="noopener noreferrer nofollow">@tahazsh</a>.
      </p>

      <div class="header__general-info">
        <div class="header__info-item">
          <svg
            class="header__info-icon"
            viewBox="0 0 24 24"
            aria-hidden="true"
            fill="currentColor"
          >
            <g>
              <path
                d="M12 7c-1.93 0-3.5 1.57-3.5 3.5S10.07 14 12 14s3.5-1.57 3.5-3.5S13.93 7 12 7zm0 5c-.827 0-1.5-.673-1.5-1.5S11.173 9 12 9s1.5.673 1.5 1.5S12.827 12 12 12zm0-10c-4.687 0-8.5 3.813-8.5 8.5 0 5.967 7.621 11.116 7.945 11.332l.555.37.555-.37c.324-.216 7.945-5.365 7.945-11.332C20.5 5.813 16.687 2 12 2zm0 17.77c-1.665-1.241-6.5-5.196-6.5-9.27C5.5 6.916 8.416 4 12 4s6.5 2.916 6.5 6.5c0 4.073-4.835 8.028-6.5 9.27z"
              ></path>
            </g>
          </svg>
          Internet
        </div>
        <div class="header__info-item">
          <svg
            class="header__info-icon"
            viewBox="0 0 24 24"
            aria-hidden="true"
            fill="currentColor"
          >
            <g>
              <path
                d="M7 4V3h2v1h6V3h2v1h1.5C19.89 4 21 5.12 21 6.5v12c0 1.38-1.11 2.5-2.5 2.5h-13C4.12 21 3 19.88 3 18.5v-12C3 5.12 4.12 4 5.5 4H7zm0 2H5.5c-.27 0-.5.22-.5.5v12c0 .28.23.5.5.5h13c.28 0 .5-.22.5-.5v-12c0-.28-.22-.5-.5-.5H17v1h-2V6H9v1H7V6zm0 6h2v-2H7v2zm0 4h2v-2H7v2zm4-4h2v-2h-2v2zm0 4h2v-2h-2v2zm4-4h2v-2h-2v2z"
              ></path>
            </g>
          </svg>

          Joined July 2011
        </div>
      </div>

      <div class="header__follow-info">
        <div class="header__follow-info-item">
          <span class="header__follow-number">100</span> Following
        </div>
        <div class="header__follow-info-item">
          <span class="header__follow-number">50K</span> Followers
        </div>
      </div>
    </div>
  </div>
  <div class="content">
    <div class="post">
      <div class="group">
        <div class="item item-128"></div>
        <div class="item item-96"></div>
        <div class="item item-full"></div>
      </div>
      <div class="group group-2">
        <div class="item item-full"></div>
        <div class="item item-full"></div>
        <div class="item item-96"></div>
      </div>
      <div class="group group-3">
        <div class="item item-full"></div>
        <div class="item item-320"></div>
        <div class="item item-full"></div>
      </div>

      <div class="group group-2">
        <div class="item item-full"></div>
        <div class="item item-full"></div>
        <div class="item item-96"></div>
      </div>
      <div class="group group-4">
        <div class="item item-128"></div>
        <div class="item item-96"></div>
        <div class="item item-full"></div>
      </div>
      <div class="group group-5">
        <div class="item item-full"></div>
        <div class="item item-320"></div>
        <div class="item item-full"></div>
      </div>
    </div>
  </div>
</div>
!

CSS 

              
                * {
  box-sizing: border-box;
}

:root {
  --background-color: hsl(208.7, 100%, 2%);

  background-color: var(--background-color);
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.app {
  max-width: 600px;
  min-height: 100vh;
  border-left: 1px solid rgba(255, 255, 255, 0.1);
  border-right: 1px solid rgba(255, 255, 255, 0.1);
  width: 100%;
  display: flex;
  flex-direction: column;
}

.header {
  z-index: 2;
}

.header__content {
  padding: 0 16px;
}

.cover-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  position: sticky;
  top: 0;
  transform-origin: 0 0;
}

.cover-image__image {
  transform-origin: 0 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

.cover-image__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 2;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  opacity: 0;
}

.cover-image__text {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 0 0 10px 16px;
  z-index: 3;
  color: white;
  transform: translateY(80px);
  will-change: transform;
}

.cover-image__name {
  font-weight: bold;
  font-size: 16px;
}

.cover-image__tweets {
  font-size: 12px;
}

.header__profile-image {
  width: 130px;
  height: 130px;
  object-fit: cover;
  border-radius: 50%;
  border: 4px solid var(--background-color);
  transform: translateY(-50%);
  transform-origin: left bottom;
}

.header__user {
  margin-top: -60px;
}

.header__user-name {
  color: white;
  font-size: 20px;
  padding: 0;
  margin: 0;
}

.header__user-handle {
  color: #71767b;
  font-size: 15px;
  margin-top: 4px;
  display: block;
}

.header__bio {
  margin: 12px 0 0;
  color: white;
}

.header__bio a {
  color: rgb(29, 155, 240);
  text-decoration: none;
}

.header__general-info {
  margin: 12px 0 0;
  display: flex;
  align-items: center;
  gap: 0 12px;
}

.header__follow-info {
  margin: 12px 0 0;
  display: flex;
  align-items: center;
  gap: 0 20px;
  color: #71767b;
}

.header__follow-number {
  color: white;
}

.header__info-item {
  display: flex;
  align-items: center;
  color: #71767b;
  line-height: 1;
}

.header__info-icon {
  width: 18px;
  margin-right: 4px;
}

.content {
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 24px 0;
}

.post {
  display: flex;
  flex-direction: column;
  max-width: 1024px;
  gap: 10px 0;
  border: 2px solid rgba(255, 255, 255, 0.1);
  border-radius: 10px;
  padding: 16px;
}

.group {
  display: flex;
  align-items: center;
  width: 100%;
  gap: 0 8px;
}

.item {
  height: 15px;
  background-color: hsl(0, 0%, 25%);
  border-radius: 10px;
}

.item-128 {
  width: 128px;
}

.item-96 {
  width: 96px;
}

.item-320 {
  width: 320px;
}

.item-full {
  width: 100%;
}

.group-2 {
  padding-right: 50px;
}

.group-3 {
  padding-right: 150px;
}
.group-4 {
  padding-right: 100px;
}
.group-5 {
  padding-right: 200px;
}
!

JS 

              
                const { ScrollObserver, valueAtPercentage } = aat

function addMorePosts() {
  const post = document.querySelector('.post')
  for (let i = 0; i < 8; i++) {
    const clonedPost = post.cloneNode(true)
    post.parentElement.appendChild(clonedPost)
  }
}

addMorePosts()

const coverImageHeight = 200
const targetImageHeight = 60
const header = document.querySelector('.header')
const coverImageContainer = document.querySelector('.cover-image')
const coverImageOverlay = document.querySelector('.cover-image__overlay')
const coverImageText = document.querySelector('.cover-image__text')
const profileImage = document.querySelector('.header__profile-image')
const headerUser = document.querySelector('.header__user')

ScrollObserver.Element(header, {
  offsetBottom: () => window.innerHeight - coverImageHeight,
  offsetTop: targetImageHeight
}).onScroll(({ percentageY }) => {
  const translateY = valueAtPercentage({
    from: 0,
    to: -(coverImageHeight - targetImageHeight),
    percentage: percentageY,
    unit: 'px'
  })
  const profileImageScale = valueAtPercentage({
    from: 1,
    to: 0.5,
    percentage: percentageY
  })
  coverImageContainer.style.transform = `translateY(${translateY})`
  profileImage.style.transform = `translateY(-50%) scale(${profileImageScale})`
  coverImageContainer.style.zIndex = percentageY >= 1 ? 10 : 1
})

ScrollObserver.Element(headerUser, {
  offsetBottom: () => window.innerHeight - targetImageHeight
}).onScroll(({ percentageY }) => {
  const translateY = valueAtPercentage({
    from: 42,
    to: 0,
    percentage: percentageY,
    unit: 'px'
  })
  coverImageOverlay.style.opacity = percentageY
  coverImageText.style.transform = `translateY(${translateY})`
})
!
999px

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