.wy-nav-content, .wy-nav-content-wrap {
  background: #efefef;
}


.wy-nav-content {
    max-width: 1200px !important;
    margin: 0 auto !important;    
}


.wy-nav-content img, .wy-nav-content-wrap img {
  width:100%;
  max-width:768px;
  display: block;
  margin: 0 auto;
}