Some things for the design

[tkapias]

I added some scss elements for the view and the print :

• display for blockquote and blockcode (pre) in the editor style.
• blockquote more centered
• pasted pictures are enlarged and centred with a 5% margin, same for the caption text under them
• force the styles for print
• force background printing for blockcode at print
• hide the lines that are not selected in the pricing tables for print

/* Modifications for view and print */
blockquote {
    margin: 0 0 0 0.3em;
    padding: 0 1em 0 1em;
    border-left: 0.3em solid #ccc;
}

pre {
    display: inline-block;
    width: 100%;
    vertical-align: top;
    font-family: monospace;
    font-size: 0.9em;
    margin: 0;
    padding: 0.5em;
    background-color: #eee;
    -webkit-print-color-adjust: exact;
    color-adjust: exact;
}

figure img {
    width: 90%;
    height: auto;
    margin: 0 5% 0 5%;
    border: dashed medium #ccc;
}

figcaption {
    width: 90%;
    height: auto;
    text-align: center;
}

@media print {
  blockquote {
      margin: 0 0 0 0.3em;
      padding: 0 1em 0 1em;
      border-style: none;
      border-left: 0.3em solid #ccc;
  }
  tr.item:not(.selected) {
      display: none;
  }
}