Switch to text view on the editing screen. Then paste the lines of code below and insert your text in the middle.
<div class="govintra-alert govintra-alert--success">
...your block of text...
</div>
Use the following text in place of govintra-alert—success to get different colours:
govintra-alert–info
govintra-alert—success
govintra-alert—warning
govintra-alert—error
