.loader {
  content: " ";
  display: block;
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(255,255,255,0.8);
  z-index: 1030;
}

.loader .spinner {
  position: absolute;
  top: 50%;
  z-index: 10;
}

@media only print {
    body {
        padding: 0 !important;
        margin: 0 !important;
    }
    .content {
        padding: 0 !important;
        margin: 0 !important;
    }
    .sidebar,
    .header {
        display: none;
    }
}