.leftbubble {
    position: relative;
    display: inline-block;
    padding: 20px;
    background-color: lightblue;
    -webkit-border-radius: 20px;
    -moz-border-radius: 20px;
    border-radius: 20px;
}

.leftbubble:before {
    content: "";
    position: absolute;
    padding: 7px 15px;
    bottom: -14px;
    right: -2px;
    background-color: lightblue;
    border-bottom-left-radius: 30px 20px;
}

.leftbubble:after {
    content: "";
    position: absolute;
    padding: 7px 15px;
    bottom: -14px;
    right: -12px;
    background-color: white;
    border-bottom-left-radius: 30px 20px;
}

.rightbubble {
    position: relative;
    display: inline-block;
    padding: 20px;
    background-color: lightblue;
    -webkit-border-radius: 20px;
    -moz-border-radius: 20px;
    border-radius: 20px;
}

.rightbubble:before {
    content: "";
    position: absolute;
    padding: 7px 15px;
    bottom: -14px;
    left: -2px;
    background-color: lightblue;
    border-bottom-right-radius: 30px 20px;
}

.rightbubble:after {
    content: "";
    position: absolute;
    padding: 7px 15px;
    bottom: -14px;
    left: -12px;
    background-color: white;
    border-bottom-right-radius: 30px 20px;
}