body {
  margin: 0;
  padding: 0;
  background-color: #f0f4f8;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
}

.container {
  width: 800px;
  height: 200px;
  border: 2px solid #333;
  overflow: hidden;
  position: relative;
  padding: 20px;
  box-sizing: border-box;
  background-color: #fff;
}

.marquee {
  position: absolute;
  white-space: nowrap;
  font-size: 24px;
  font-weight: bold;
  color: #0077cc;
  text-align: center;
}