Forum:How can I change arrow's position?

Hello! It's the first time I came here for some help; and what I'm searching is how to change the arrow's position in this CSS: .burbuja { background: crimson; color: #FFF; font-family: Tahoma; font-size: 14px; padding: 20px 5px 10px 5px; text-align: center; width: 300px; -moz-border-radius: 10px; -webkit-border-radius: 10px; border-radius: 15px; } .burbuja:after { border: solid 10px transparent; border-top-color: crimson; border-bottom: 0; bottom: -22px; content: ""; display: block; height: 0; margin: auto; overflow: hidden; position: relative; width: 0; }

At now, the arrow is under the "bubble" section; and I want that it will be at the left side of the bubble.

Thanks.

Regards!