img {
  max-width: 100%;   
  height: auto;      
  display: block; }
  
  * {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.banner {
  width: 100%;
  display: block;
}

body {
  margin-top: 0;
}

* {
  font-family: 'Open Sans', sans-serif;
}