I want to make a CSS only speech bubble. So far, I have this…
Example

CSS
div {
position: relative;
background: #fff;
padding: 10px;
font-size: 12px;
text-align: center;
-webkit-border-radius: 20px;
-moz-border-radius: 20px;
border-radius: 20px;
}
div:after {
content: "";
display: block;
width: 0;
height: 0;
position: absolute;
left: 50%;
bottom: -60px;
margin-left: -15px;
border-width: 30px 20px 30px 20px;
border-style: solid;
border-color: #fff transparent transparent transparent;
}
…which is almost exactly what I want. However, I want a light border around the whole thing.
Obviously, on the main portion, that is simple as adding border: 1px solid #333 to the div.
However, as the tail of the bubble is a border hack, I can’t user a border with it.
I tried setting a box shadow of 0 0 1px #333 but browsers apply the border to the rectangular shape of the element (which I guess is what they should do).
My next thoughts were finding a Unicode character that looks like a bubble tail and absolutely positioning it there, with text-shadow for the border and using z-index of the main bubble to hide the top shadow of the text.
What Unicode character would be suitable for this? Should I do something different? Do I need to resort to an image?
I only have to support Mobile Safari. 🙂
http://jsfiddle.net/QYH5a/