html, body {
  height: 100vh;
  width: 100vw; }

body {
  background: white;
  display: -webkit-box;
  display: -webkit-flex;
  display: -ms-flexbox;
  display: flex;
  margin: 0;
  padding: 0; }

#container {
  margin: auto;
  overflow: hidden;
  position: relative; }

.container-500x120 {
  height: 120px;
  width: 500px; }

.container-600x120 {
  height: 120px;
  width: 600px; }

.container-740x120 {
  height: 120px;
  width: 740px; }

.banner {
  background: black;
  color: white;
  display: block;
  font: 1rem/1.12 sans-serif;
  left: 0;
  position: absolute;
  top: 0; }

.banner img {
  display: block; }

.container-740x120 banner, .container-740x120 banner img {
  height: 120px;
  width: 740px; }

.container-600x120 banner, .container-600x120 banner img {
  height: 120px;
  width: 600px; }

.container-500x120 banner, .container-500x120 banner img {
  height: 120px;
  width: 500px; }