This documentation is not maintained and could be outdated

The good news is: a better solution, based on a Shortcode, is available and documented.

Hugo custom infoboxes

Wait, there is a module for this

Before implementing this solution, check out the module “Hugo notice”, it may suit your needs.
The method below is easier to insert and extend.


Hugo uses Markdown and offers many different ways to format your text. It’s also possible to add custom styles, like the following infoboxes:

This is a fancy note
This is warning text


We first need to add some custom CSS to our theme and add a tiny custom font (7kb).
Then we’ll tweak Vscode to make it easy and fast to insert our different boxes.

Set some custom CSS

The theme BeautifulHugo makes it damn easy (and if you use another theme, check out this guide from Matt Mayes).

  1. Create a file named layouts/partials/head_custom.html

  2. Insert the following lines:

<!-- Custom css insertion -->
<link href="{{ .Site.BaseURL }}css/boxes.css" rel="stylesheet">
  1. Create a file static/css/boxes.css and paste these lines:

@font-face {
  font-family: "icons-boxes";
  src: url("../fonts/icons-boxes.eot?bzmaom");
  src: url("../fonts/icons-boxes.eot?bzmaom#iefix") format("embedded-opentype"),
    url("../fonts/icons-boxes.ttf?bzmaom") format("truetype"),
    url("../fonts/icons-boxes.woff?bzmaom") format("woff"),
    url("../fonts/icons-boxes.svg?bzmaom#icomoon-notices") format("svg");
  font-weight: normal;
  font-style: normal;
  font-display: block;
  font-variant: normal;
  text-transform: none;
  line-height: 1;

[class*=" box"] {
  /* use !important to prevent issues with browser extensions that change fonts */
  font-family: "icons-boxes" !important;
  background-color: #fffeb4a3;

  padding: 0.5em;
  margin-top: 1em;

  /* Better Font Rendering =========== */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;

[class^="box"]::before {
  padding-left: 0.4em;
  padding-right: 0.8em;

/* Add icons */

.boxBell:before {
  content: "\f0f3";
  color: #9f6000;
.boxCheck:before {
  content: "\f058";
  color: #4f8a10;
.boxComment:before {
  content: "\f075";
.boxHeart:before {
  content: "\f004";
.boxInfo:before {
  content: "\f05a";
  color: #00529b;
.boxPlus:before {
  content: "\f067";
.boxStar:before {
  content: "\f005";
.boxWarning:before {
  content: "\f06a";

/* Set colors */

.boxBell {
  background-color: #f1f500a4;

.boxWarning {
  color: #fff;
  background-color: rgba(217, 83, 79, 0.9);

.boxCheck {
  background-color: #dff2bf;

.boxInfo {
  background-color: #bde5f8;
  1. Download and extract this custom font (7kb) in static/fonts

That’s it!

Now to insert an infobox, you just need to insert in your markdown something like

<div class="boxInfo">Your text</div>

Feel free to add border-radius and box-shadow

Now let’s see how to make it faster with Vscode

Let’s get faster with Vscode autocompletion

Vscode comes with powerful autocompletion: in an HTML file, just type .boxInfo then press Tab and you get a <div> prefilled with the class you defined

Here is a demo:

demonstration of Emmet

To activate autocompletion in Markdown files, paste the following lines in your settings

"settings": {

    "emmet.includeLanguages": {
        "markdown": "html"

    "[markdown]": {
      "editor.quickSuggestions": false

(The second part removes the noisy suggestions)

You may also add, depending on your configuration

"html-css-class-completion.enableEmmetSupport": true,

You’re done! Now you can type .boxInfo, then Tab and the following code is inserted:

<div class="boxInfo"></div>

Type your text between the tags and enjoy!

The following boxes are available:

<div class="boxBell">Disclaimer</div>
<div class="boxCheck">Check</div>
<div class="boxComment">Comment</div>
<div class="boxHeart">Heart</div>
<div class="boxInfo">Info</div>
<div class="boxPlus">Plus</div>
<div class="boxStar">Star</div>
<div class="boxWarning">Warning </div>

will display:


How to use HTML and Markdown inside an infobox

Using Markdown inside one of these infoboxes doesn’t work as expected: the Markdown is not rendered

The trick: You need to insert an empty line before your Markdown or HTML

<div  class="boxInfo">Note:

This is **bold** and this is _emphasized_. [this is a link](

Will show


This is bold and this is emphasized. this is a link


It’s not working? You may need to allow HTML rendering with these lines in config.toml:

  unsafe = true


Further readings