chat_style.css

.chats {
    padding: 30px 15px
}

.chat-avatar {
    float: right
}

.chat-avatar .avatar {
    width: 30px
        -webkit-box-shadow: 0 2px 2px 0 rgba(0,0,0,0.2),0 6px 10px 0 rgba(0,0,0,0.3);
    box-shadow: 0 2px 2px 0 rgba(0,0,0,0.2),0 6px 10px 0 rgba(0,0,0,0.3);
}

.chat-body {
    display: block;
    margin: 10px 30px 0 0;
    overflow: hidden;
}

.chat-body:first-child {
    margin-top: 0
}

.chat-content {
    position: relative;
    display: block;
    float: right;
    padding: 8px 15px;
    margin: 0 20px 10px 0;
    clear: both;
    color: #fff;
    background-color: #62a8ea;
    border-radius: 4px;
        -webkit-box-shadow: 0 1px 4px 0 rgba(0,0,0,0.37);
    box-shadow: 0 1px 4px 0 rgba(0,0,0,0.37);
    
}

.chat-content:before {
    position: absolute;
    top: 10px;
    right: -10px;
    width: 0;
    height: 0;
    content: '';
    border: 5px solid transparent;
    border-left-color: #62a8ea
}

.chat-content>p:last-child {
    margin-bottom: 0
}

.chat-content+.chat-content:before {
    border-color: transparent
}

.chat-time {
    display: block;
    margin-top: 8px;
    color: rgba(255, 255, 255, .6)
}

.chat-left .chat-avatar {
    float: left
}

.chat-left .chat-body {
    margin-right: 0;
    margin-left: 30px
}

.chat-left .chat-content {
    float: left;
    margin: 0 0 10px 20px;
    color: #76838f;
    background-color: #dfe9ef
}

.chat-left .chat-content:before {
    right: auto;
    left: -10px;
    border-right-color: #dfe9ef;
    border-left-color: transparent
}

.chat-left .chat-content+.chat-content:before {
    border-color: transparent
}

.chat-left .chat-time {
    color: #a3afb7
}

.panel-footer {
    padding: 0 30px 15px;
    background-color: transparent;
    border-top: 1px solid transparent;
    border-bottom-right-radius: 3px;
    border-bottom-left-radius: 3px;
}
.avatar img {
    width: 100%;
    max-width: 100%;
    height: auto;
    border: 0 none;
    border-radius: 1000px;
}
.chat-avatar .avatar {
    width: 30px;
}
.avatar {
    position: relative;
    display: inline-block;
    width: 40px;
    white-space: nowrap;
    border-radius: 1000px;
    vertical-align: bottom;
}