h4 {
   font-family:Open Sans;
}

.header-ad {
  width: 970px;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

@media screen and (max-width: 969px) {
  .header-ad {
    display: none;
  }
}

/*
@media screen and (max-width: 1100px) {
  .header-logo {
      width: 100%;
      float: left;
  }
  
  .header-banner {
      width: 100%;
      float: left;
      margin-top: 10px;
  }
}

@media screen and (max-width: 600px) {
  .header-logo {
      float: none;
  }
  
  .header-banner {
      float: none;
      margin-top: 5px;
  }
}
*/