Welcome to this tutorial on How to Build an Infinite Carousel with HTML & CSS.

HTML Structure

HTML CODE
<div class="marquee-wrapper">
  <h2>Our Partners</h2>
  <div class="marquee-container">
    <div class="marquee-track">
      <div class="marquee-item">CSS3</div>
      <div class="marquee-item">HTML5</div>
      <div class="marquee-item">JavaScript</div>
      <div class="marquee-item">React</div>
      <div class="marquee-item">Node.js</div>
      <div class="marquee-item">Python</div>
      <div class="marquee-item">Django</div>
      <div class="marquee-item">Figma</div>
      <div class="marquee-item">CSS3</div>
      <div class="marquee-item">HTML5</div>
      <div class="marquee-item">JavaScript</div>
      <div class="marquee-item">React</div>
      <div class="marquee-item">Node.js</div>
      <div class="marquee-item">Python</div>
      <div class="marquee-item">Django</div>
      <div class="marquee-item">Figma</div>
    </div>
  </div>
</div>

CSS Styling

CSS CODE
.marquee-wrapper {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: #0f172a;
  color: white;
  font-family: 'Inter', sans-serif;
  overflow: hidden;
}
.marquee-wrapper h2 {
  font-size: 2.5rem;
  margin-bottom: 50px;
  color: #38bdf8;
}
.marquee-container {
  width: 100%;
  max-width: 1000px;
  overflow: hidden;
  padding: 20px 0;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}
.marquee-track {
  display: flex;
  width: calc(200px * 16 + 20px * 16);
  animation: scroll 20s linear infinite;
}
.marquee-track:hover {
  animation-play-state: paused;
}
.marquee-item {
  width: 200px;
  height: 100px;
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: #94a3b8;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 10px;
  margin: 0 10px;
  transition: all 0.3s ease;
  cursor: pointer;
}
.marquee-item:hover {
  background: #38bdf8;
  color: #0f172a;
  transform: scale(1.05);
  box-shadow: 0 10px 25px rgba(56, 189, 248, 0.4);
}
@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(calc(-200px * 8 - 20px * 8)); }
}

JavaScript Logic

JAVASCRIPT CODE
document.addEventListener('DOMContentLoaded', () =&gt; {
    // Pure CSS implementation, no JS required for infinite scrolling marquee.
});