Пользоватеьская полоса прокуртки в CSS

<div class="no-scrollbars">
  <p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Aenean interdum id leo a consectetur. Integer justo magna, ultricies vel enim vitae, egestas efficitur leo. Ut nulla orci, rutrum eu augue sed, tempus pellentesque quam.</p>
</div>

div {
  width: 200px;
  height: 100px;
}

.no-scrollbars {
  overflow: auto;
  scrollbar-width: none;
}

.no-scrollbars::-webkit-scrollbar {
  display: none;
}

<div class="vertical-snap">
  <a href="#"><img src="https://picsum.photos/id/1067/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/122/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/188/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/249/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/257/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/259/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/283/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/288/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/299/640/640"></a>
</div>

.vertical-snap {
  margin: 0 auto;
  display: grid;
  grid-auto-flow: row;
  gap: 1rem;
  width: calc(180px + 1rem);
  padding: 1rem;
  height: 480px;
  overflow-y: auto;
  overscroll-behavior-y: contain;
  scroll-snap-type: y mandatory;
}

.vertical-snap > a {
  scroll-snap-align: center;
}

.vertical-snap img {
  width: 180px;
  object-fit: contain;
  border-radius: 1rem;
}

<div class="horizontal-snap">
  <a href="#"><img src="https://picsum.photos/id/1067/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/122/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/188/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/249/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/257/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/259/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/283/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/288/640/640"></a>
  <a href="#"><img src="https://picsum.photos/id/299/640/640"></a>
</div>

.horizontal-snap {
  margin: 0 auto;
  display: grid;
  grid-auto-flow: column;
  gap: 1rem;
  height: calc(180px + 1rem);
  padding: 1rem;
  max-width: 480px;
  overflow-y: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x mandatory;
}

.horizontal-snap > a {
  scroll-snap-align: center;
}

.horizontal-snap img {
  width: 180px;
  max-width: none;
  object-fit: contain;
  border-radius: 1rem;
}

<div class="custom-scrollbar">
  <p>
    Lorem ipsum dolor sit amet consectetur adipisicing elit.<br />
    Iure id exercitationem nulla qui repellat laborum vitae, <br />
    molestias tempora velit natus. Quas, assumenda nisi. <br />
    Quisquam enim qui iure, consequatur velit sit?
  </p>
</div>

.custom-scrollbar {
  height: 70px;
  overflow-y: scroll;
}

.custom-scrollbar::-webkit-scrollbar {
  width: 8px;
}

.custom-scrollbar::-webkit-scrollbar-track {
  background: #1E3F20;
  border-radius: 12px;
}

.custom-scrollbar::-webkit-scrollbar-thumb {
  background: #4A7856;
  border-radius: 12px;
}

<div class="overflow-scroll-gradient">
  <div class="overflow-scroll-gradient-scroller">
    Lorem ipsum dolor sit amet consectetur adipisicing elit. <br />
    Iure id exercitationem nulla qui repellat laborum vitae, <br />
    molestias tempora velit natus. Quas, assumenda nisi. <br />
    Quisquam enim qui iure, consequatur velit sit? <br />
    Lorem ipsum dolor sit amet consectetur adipisicing elit.<br />
    Iure id exercitationem nulla qui repellat laborum vitae, <br />
    molestias tempora velit natus. Quas, assumenda nisi. <br />
    Quisquam enim qui iure, consequatur velit sit?
  </div>
</div>

.overflow-scroll-gradient {
  position: relative;
}

.overflow-scroll-gradient:after {
  content: '';
  position: absolute;
  bottom: 0;
  width: 250px;
  height: 25px;
  background: linear-gradient(transparent, white);
  pointer-events: none;
}

.overflow-scroll-gradient-scroller {
  overflow-y: scroll;
  background: white;
  width: 240px;
  height: 200px;
  padding: 15px;
  line-height: 1.2;
}

<div id="scroll-progress"></div>

body {
  min-height: 200vh;
}

#scroll-progress {
  position: fixed;
  top: 0;
  width: 0%;
  height: 4px;
  background: #7983ff;
  z-index: 10000;
}

const scrollProgress = document.getElementById('scroll-progress');
const height =
  document.documentElement.scrollHeight - document.documentElement.clientHeight;

window.addEventListener('scroll', () => {
  const scrollTop =
    document.body.scrollTop || document.documentElement.scrollTop;
  scrollProgress.style.width = `${(scrollTop / height) * 100}%`;
});