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CSS

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HTML 

              
                <div class="talk-bubble">
  <div class="talktext">
    <p>CSS Talk Bubble configured by classes. Defaults to square shape, no triangle. Height is auto-adjusting to the height of the text.</p>
  </div>
</div>
<div class="talk-bubble tri-right left-top">
  <div class="talktext">
    <p>This one adds a right triangle on the left, flush at the top by using .tri-right and .left-top to specify the location.</p>
  </div>
</div>
<div class="talk-bubble tri-right left-in">
  <div class="talktext">
    <p>This talk-bubble uses .left-in class to show a triangle on the left slightly indented. Still a blocky square.</p>
  </div>
</div>
<div class="talk-bubble tri-right round btm-left">
  <div class="talktext">
    <p>And now using .round we can smooth the sides down. Also uses .btm-left to show a triangle at the bottom flush to the left.</p>
  </div>
</div>
<div class="talk-bubble tri-right border round btm-left-in">
  <div class="talktext">
    <p>Now we add a border and it looks like a comic. Uses .border .round and .btm-left-in</p>
  </div>
</div>
<div class="talk-bubble tri-right border btm-right-in">
  <div class="talktext">
    <p>Now flipped the other way and square. Uses .border and .btm-right-in</p>
  </div>
</div>
<div class="talk-bubble tri-right btm-right">
  <div class="talktext">
    <p>Flush to the bottom right. Uses .btm-right only.</p>
  </div>
</div>
<div class="talk-bubble tri-right round right-in">
  <div class="talktext">
    <p>Moving our way back up the right side indented. Uses .round and .right-in</p>
  </div>
</div>
<div class="talk-bubble tri-right round border right-top">
  <div class="talktext">
    <p>And finally on the right flush at the top. Uses .round .border and .right-top</p>
  </div>
</div>
!

CSS 

              
                /* General CSS Setup */
body{
  background-color: lightblue;
  font-family: "Ubuntu-Italic", "Lucida Sans", helvetica, sans;
}

/* container */
.container {
  padding: 5% 5%;
}

/* CSS talk bubble */
.talk-bubble {
	margin: 40px;
  display: inline-block;
  position: relative;
	width: 200px;
	height: auto;
	background-color: lightyellow;
}
.border{
  border: 8px solid #666;
}
.round{
  border-radius: 30px;
	-webkit-border-radius: 30px;
	-moz-border-radius: 30px;

}

/* Right triangle placed top left flush. */
.tri-right.border.left-top:before {
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: -40px;
	right: auto;
  top: -8px;
	bottom: auto;
	border: 32px solid;
	border-color: #666 transparent transparent transparent;
}
.tri-right.left-top:after{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: -20px;
	right: auto;
  top: 0px;
	bottom: auto;
	border: 22px solid;
	border-color: lightyellow transparent transparent transparent;
}

/* Right triangle, left side slightly down */
.tri-right.border.left-in:before {
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: -40px;
	right: auto;
  top: 30px;
	bottom: auto;
	border: 20px solid;
	border-color: #666 #666 transparent transparent;
}
.tri-right.left-in:after{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: -20px;
	right: auto;
  top: 38px;
	bottom: auto;
	border: 12px solid;
	border-color: lightyellow lightyellow transparent transparent;
}

/*Right triangle, placed bottom left side slightly in*/
.tri-right.border.btm-left:before {
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
	left: -8px;
  right: auto;
  top: auto;
	bottom: -40px;
	border: 32px solid;
	border-color: transparent transparent transparent #666;
}
.tri-right.btm-left:after{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
	left: 0px;
  right: auto;
  top: auto;
	bottom: -20px;
	border: 22px solid;
	border-color: transparent transparent transparent lightyellow;
}

/*Right triangle, placed bottom left side slightly in*/
.tri-right.border.btm-left-in:before {
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
	left: 30px;
  right: auto;
  top: auto;
	bottom: -40px;
	border: 20px solid;
	border-color: #666 transparent transparent #666;
}
.tri-right.btm-left-in:after{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
	left: 38px;
  right: auto;
  top: auto;
	bottom: -20px;
	border: 12px solid;
	border-color: lightyellow transparent transparent lightyellow;
}

/*Right triangle, placed bottom right side slightly in*/
.tri-right.border.btm-right-in:before {
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: auto;
	right: 30px;
	bottom: -40px;
	border: 20px solid;
	border-color: #666 #666 transparent transparent;
}
.tri-right.btm-right-in:after{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: auto;
	right: 38px;
	bottom: -20px;
	border: 12px solid;
	border-color: lightyellow lightyellow transparent transparent;
}
/*
	left: -8px;
  right: auto;
  top: auto;
	bottom: -40px;
	border: 32px solid;
	border-color: transparent transparent transparent #666;
	left: 0px;
  right: auto;
  top: auto;
	bottom: -20px;
	border: 22px solid;
	border-color: transparent transparent transparent lightyellow;

/*Right triangle, placed bottom right side slightly in*/
.tri-right.border.btm-right:before {
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: auto;
	right: -8px;
	bottom: -40px;
	border: 20px solid;
	border-color: #666 #666 transparent transparent;
}
.tri-right.btm-right:after{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: auto;
	right: 0px;
	bottom: -20px;
	border: 12px solid;
	border-color: lightyellow lightyellow transparent transparent;
}

/* Right triangle, right side slightly down*/
.tri-right.border.right-in:before {
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: auto;
	right: -40px;
  top: 30px;
	bottom: auto;
	border: 20px solid;
	border-color: #666 transparent transparent #666;
}
.tri-right.right-in:after{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: auto;
	right: -20px;
  top: 38px;
	bottom: auto;
	border: 12px solid;
	border-color: lightyellow transparent transparent lightyellow;
}

/* Right triangle placed top right flush. */
.tri-right.border.right-top:before {
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: auto;
	right: -40px;
  top: -8px;
	bottom: auto;
	border: 32px solid;
	border-color: #666 transparent transparent transparent;
}
.tri-right.right-top:after{
	content: ' ';
	position: absolute;
	width: 0;
	height: 0;
  left: auto;
	right: -20px;
  top: 0px;
	bottom: auto;
	border: 20px solid;
	border-color: lightyellow transparent transparent transparent;
}

/* talk bubble contents */
.talktext{
  padding: 1em;
	text-align: left;
  line-height: 1.5em;
}
.talktext p{
  /* remove webkit p margins */
  -webkit-margin-before: 0em;
  -webkit-margin-after: 0em;
}
!

JS
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