body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
  background-color: #f2f2f2;
}

.construction-container {
  text-align: center;
}

h1 {
  font-size: 36px;
  color: #333;
}

.bar {
  width: 200px;
  height: 10px;
  background-color: #333;
  margin: 20px auto;
  position: relative;
  overflow: hidden;
}

.bar::before {
  content: '';
  width: 100%;
  height: 100%;
  background-color: #ffc107;
  position: absolute;
  top: 0;
  left: -100%;
  animation: slide 2s infinite;
}

@keyframes slide {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}