@media only screen and (min-width: 1000px) {
  body.blog #ajax-content-wrap .container,
  body.archive #ajax-content-wrap .container {
    max-width: 100% !important;
    width: 100% !important;
  }

  body.blog #ajax-content-wrap .post-area,
  body.archive #ajax-content-wrap .post-area {
    width: 100% !important;
    max-width: 100% !important;
  }
}