How to Create a Curved Speech Bubble

How to create a curved speech bubble?

I would consider radial-gradient to do this:

.userMsgBottom {
  position: relative;
  display: inline-block;
  color:#fff;
  max-width: 260px;
  background-color: #2e7384;
  margin: 30px;
  padding: 7px;
  border-radius: 6px;
}

.userMsgBottom:after {
  content: "";
  position: absolute;
  bottom: 0;
  right: -25px;
  width: 40px;
  height: 25px;
  background: radial-gradient(25px at top right, #0000 99%, #2e7384 102%);
}

.userMsgBottom.left:after {
  content: "";
  position: absolute;
  bottom: 0;
  left: -25px;
  width: 40px;
  height: 25px;
  background: radial-gradient(25px at top left, #0000 99%, #2e7384 102%);
}

<div class="userMsgBottom">
  Some text here<br> Some text here<br> Some text here
</div>

<div class="userMsgBottom left">
  Some text here<br> Some text here<br> Some text here
</div>

How to create a curve tail for speech bubble with CSS?

As webtiki says, you can get this result adapting my previous answer (Even though may be it is a little bit difficult)

.container {  width:300px;  margin:5px;}.test {position: relative;width: 300px;height: 150px;padding: 0px;background: pink;border-radius: 6px;}
.test:after {    content: '';    top: 1px;    right: -29px;    position: absolute;    border: 0px solid;    display: block;    width: 38px;     height: 26px;    background-color: transparent;    border-bottom-left-radius: 50%;    border-bottom-right-radius: 50%;    box-shadow: -21px 9px 0px 8px pink;}

<div class="container">  <div class="test"></div></div><img src="http://i.stack.imgur.com/MYlKY.png" alt="Sample Image">

How to place curved arrow on top of your speech bubble?

You can use a radial-gradient with a transparant circle to create the curved tip of the speech bubble. Apply it to the ::before pseudo element of your bubble so it gets placed on top of your speech bubble div.

.bubble::before {
  content: '';
  height: 30px;
  width: 30px;
  background: radial-gradient(circle at 100% 0, transparent 30px, cornflowerblue 0);
  display: block;
  margin-left: 100px;
}

.message {
  padding: 10px 20px;
  width: 300px;
  background: cornflowerblue;
  display: block;
  font-family: sans-serif;
  color: floralwhite;
  font-size: 18px;
  border-radius: 0 0 10px 10px;
}

<div class="bubble">
  <div class="message">
     <p>"Tell me and I forget. Teach me and I remember. Involve me and I learn."<p>
     <small>Benjamin Franklin</small>
  </div>
</div>

How to make a curved triangle speech bubble with pseudo-elements?

you could use pseudo elements (and their trickery) to generate something similar to this:

---

div {  height: 200px;  width: 350px;  background: tomato;  margin: 50px;  position: relative;  display: inline-block;}div:before {  content: "";  position: absolute;  height: 40px;  width: 40px;  background: tomato;  bottom: 2%;  left: -15px;  border-radius: 0 0 100% 0;  -webkit-transform: rotate(35deg);  transform: rotate(35deg);}div:after {  content: "";  position: absolute;  height: 40px;  width: 10px;  background: white;  bottom: 7%;  left: -18px;  border-radius: 50%;  -webkit-transform: rotate(35deg);  transform: rotate(35deg);}

<div>Hello world</div>

CSS speech bubble with rounded arrow

You could do something like this using transform: skew(); and border-radius. I added z-index: -1 to the pseudo-element so it sits behind the <span> (I'm assuming you will put text inside).

.speech-bubble {    position: relative;    background: #ff0d1e;    display: inline-block;    width: 239px;    height: 95px;    margin: 40px;    -webkit-border-radius: 10px;    -moz-border-radius: 10px;    border-radius: 10px;}
.speech-bubble:after {    content: "";    position: absolute;    top: 25px;    left: -32px;    width: 70px;    height: 30px;    background-color: #ff0d1e;    transform: skew(55deg);    transform-origin: top right;    border-radius: 15% 0 0 0 / 25%;    z-index: -1;}

<span class="speech-bubble"></span>

Create Speech Bubble with CSS

I would create a circular pseudo-element, with a transparent background and border on only one side. Then use transform and position: absolute to manually set it in place.

You'll need to tweak the values depending on the desired size of the bubble and tail.

z-index: -1 hides the pseudo-element under its parent.

.bubble {  position: relative;  width: 50px;  height: 40px;    border-radius: 50%;    background-color: grey;}
.bubble::after {  position: absolute;  width: 40px;  height: 40px;    bottom: -2px;  left: -16px;    border-radius: 50px;  border-bottom: 8px solid grey;    transform: rotate(-55deg);  z-index: -1;  content: '';  }

<div class="bubble"></div>

create specific chat bubble shape with CSS

Here's a example based on Pure CSS speech bubbles by Nicolas Gallagher.

It uses overlapping pseudo-elements with border-radius to create the bubble's pointy curved stem. This may not be a pixel-perfect match to your mockup, but you can modify the values to improve the shape as desired.

body {
  background: lightgray;
  margin: 0;
}

.speech-bubble {
  position: relative;
  padding: 50px;
  margin: 1em 20px;
  text-align: center;
  color: black;
  background: white;
  border-radius: 30px;
}

.speech-bubble:before {
  content: "";
  position: absolute;
  z-index:-1;
  left: -22px;
  top: 0;
  width: 40px;
  border-bottom: 35px solid white;
  border-top-right-radius: 25px;
}

.speech-bubble:after {
  content: "";
  position: absolute;
  z-index:-1;
  left: -28px;
  top: -3px;
  height: 38px;
  width: 28px;
  background: lightgray;
  border-top-right-radius: 20px;
}

<div class="speech-bubble">Hello, world.</div>

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