challenge-landing-page/assets/styles/styles.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

header {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  height: 100px;
  background: #000000;
}

.banner-desktop {
  display: flex;
  justify-content: center;
  width: 100%;
}

.banner-desktop figure img {
  width: 100%;
}

.banner-mobile {
  display: none;
}

@media (max-width: 414px) {
  .banner-desktop {
    display: none;
  }

  .banner-mobile {
    display: flex;
    justify-content: center;
    width: 100%;
  }

  .banner-mobile figure img {
    width: 100%;
  }
}