Hi there,
it would require some CSS like this:
.bubble {
position: relative;
max-width: 250px;
/* Set width */
height: auto;
padding: 20px;
background: #FFFFFF;
/* Set background-color */
border-radius: 10px;
}
.bubble:after {
content: '';
position: absolute;
border-style: solid;
border-width: 15px 15px 0;
border-color: #FFFFFF transparent;
display: block;
width: 0;
z-index: 1;
bottom: -14px;
left: 50%;
transform: translateX(-50%);
}
And then in your content you would add this HTML
<div class="bubble">
This is my speech bubble text
</div>