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

.banner {
  background-color: #ff004c;
  height: 200px;
  width: 1450px;
  position: fixed; fix this pls
}

.banner img {
  width: 500px;
  display: block;
  margin-left: auto;
  margin-right: auto;
  padding-left: 100px;  
  padding-right: 100px;
  padding-bottom: 100px;
  padding-top: 20px;
}