.speech_bubble_L {
    position: relative;
    background: #11A2DA;
    color: #FFFFFF;
    font-family: Arial;
    line-height: 100px;
    text-align: center;
    width: auto;
    max-width: 600px;
    height: auto;
    border-radius: 10px;
    padding: 0px;
}
.speech_bubble_L:after {
    content: '';
    position: absolute;
    display: block;
    width: 0;
    z-index: 1;
    border-style: solid;
    border-width: 20px 20px 0 0;
    border-color: #11A2DA transparent transparent transparent;
    bottom: -20px;
    left: 10%;
    margin-left: -10px;
}

.speech_bubble_R {
    position: relative;
    background: #0f89bf;
    color: #FFFFFF;
    font-family: Arial;
    line-height: 100px;
    text-align: center;
    width: auto;
    max-width: 600px;
    height: auto;
    border-radius: 10px;
    padding: 0px;
}
.speech_bubble_R:after {
    content: '';
    position: absolute;
    display: block;
    width: 0;
    z-index: 1;
    border-style: solid;
    border-width: 0 20px 20px 0;
    border-color: transparent #0f89bf transparent transparent;
    bottom: -20px;
    left: 90%;
    margin-left: -10px;
}

@media screen and (max-width: 576px) {
    .speech_bubble_L{
        line-height: 50px;
    }
    .speech_bubble_R{
        line-height: 50px;
    }
}

@media screen and (min-width: 576px) {
    .speech_bubble_L{
        line-height: 70px;
    }
    .speech_bubble_R{
        line-height: 70px;
    }
}

@media (min-width: 768px) {
    .speech_bubble_L{
        line-height: 80px;
    }
    .speech_bubble_R{
        line-height: 80px;
    }
}

@media (min-width: 992px) {
    .speech_bubble_L{
        line-height: 75px;
    }
    .speech_bubble_R{
        line-height: 75px;
    }
}

@media (min-width: 1200px) {
    .speech_bubble_L{
        line-height: 80px;
    }
    .speech_bubble_R{
        line-height: 80px;
    }
}