Wagtail/Draftail button links

button-block.css

/* Goes into /static/css/button-block.css */

/**
 * Add some spacing to the button-section inside of Draftail.
 */
 .Draftail-block--button-block {
    padding-top: 25px;
    padding-bottom: 15px;
    border-top: 1px solid #ccc;
    border-bottom: 1px solid #ccc;
    position: relative;
}

/**
 * Add CSS-based text to the top of the Draftail button-block section.
 */
.Draftail-block--button-block::before {
    content: 'Links will turn into buttons.';
    position: absolute;
    top: 0;
    left: 0;
    color: #555;
    font-size: 12px;
}

/**
 * Make buttons look like Wagtail buttons.
 */
.Draftail-block--button-block a[role="button"] {
    line-height: 1.85em;
    color: #007d7e;
    background-color: transparent;
    padding: 0 .8em;
    font-size: .95em;
    border-radius: 3px;
    font-family: Open Sans,Arial,sans-serif;
    width: auto;
    font-weight: 400;
    vertical-align: middle;
    display: inline-block;
    border: 1px solid #007d7e;
    text-decoration: none;
    text-transform: uppercase;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
    box-sizing: border-box;
    -webkit-font-smoothing: auto;
}
    /* Hover state */
    .Draftail-block--button-block a[role="button"]:hover {
        background-color: #00676a;
        color: #fff;
        border-color: transparent;
    }

wagtail_hooks.py

"""Draftail hooks.

Adds a .css file to the /admin/ and register a Block Element for Draftail.
"""
import wagtail.admin.rich_text.editors.draftail.features as draftail_features
from wagtail.admin.rich_text.converters.html_to_contentstate import BlockElementHandler
from wagtail.core import hooks

from django.contrib.staticfiles.templatetags.staticfiles import static
from django.utils.html import format_html

@hooks.register('register_rich_text_features')
def register_button_section_feature(features):
    """Register the section of buttons with Draftail."""
    feature_name = 'button-block'
    type_ = 'button-block'
    tag = 'div'

    control = {
        'type': type_,
        'label': ' ',
        'description': 'Button Section',
        'element': 'div',
        'icon': 'icon icon-grip',
    }

    features.register_editor_plugin(
        'draftail', feature_name, draftail_features.BlockFeature(control)
    )

    features.register_converter_rule('contentstate', feature_name, {
        'from_database_format': {tag: BlockElementHandler(type_)},
        'to_database_format': {'block_map': {type_: {'element': 'div', 'props': {'class': 'rich-text-buttons'}}}},

    })
    # Auto append feature to Draftail
    features.default_features.append('button-block')


# Register a custom css file for the wagtail admin.
@hooks.register('insert_global_admin_css', order=100)
def global_admin_css():
    """Add /static/css/button-block.css to the Wagtail /admin/."""
    return format_html(
        '<link rel="stylesheet" href="{}">',
        static('css/button-block.css'))

your_frontend_template.html

{% load wagtailcore_tags %}

<style>
  .rich-text-buttons a {
    display: inline-block;
    border-radius: 3px;
    border: 1px solid #007d7e;
  }
</style>

{{ self.richtextfield|richtext }}