In order to make this work, you have to prefix the data-i18n attribute of the elements you want to translate with [html]:
<div class="i18n" data-i18n="[html]content.body">
Source: i18next.jquery.js
In order to make this work, you have to prefix the data-i18n attribute of the elements you want to translate with [html]:
<div class="i18n" data-i18n="[html]content.body">
Source: i18next.jquery.js