styles.css

body {
  background: url(bbf.JPG) fixed; 
  background-size: contain;
}
.box {
  background: rgba(236, 236, 236, 0.95);
  display: inline-block;
  position: relative;
  top: 90vh;
}

.banner {
  font-size: 2.5rem;
  margin: auto;
  white-space: nowrap;
  display: inline-block;
  padding-left: 100%;
  animation: banner linear infinite 40s;
}

@keyframes banner {
  0% {
    transform: translate(0, 0);
  }
  100% {
    transform: translate(-100%, 0);
  }
}