instantchat/public_html/css/style.css

body {
    font-family: Roboto,sans-serif;
    font-size: 1rem;
}

img {
    max-width: 100%;
}

.container {
    margin: auto;
    max-width: 1170px;
}

.messaging {
    overflow: hidden;
    padding: 0 0 50px 0;
    position: relative;
}

.messaging_heading {
    border: 1px solid #c4c4c4;
    border-bottom: 0;
    padding: 10px 29px 10px 20px;
    overflow: hidden;
}

@media (min-width: 768px) {
    .messaging_heading {
        display: none;
    }

    #sidebarCollapse {
        display: none;
    }
}

.inbox_msg {
    border: 1px solid #c4c4c4;
    clear: both;
    overflow: hidden;
}

/* mobile */
#sidebar {
    align-items: stretch;
    border: 1px solid #c4c4c4;
    background: #f8f8f8 none repeat scroll 0 0;
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 0;
    transform: translateX(100%);
    transition-duration: 0.7s;
    width: 100%;
    z-index: 1;
}

/* desktop */
@media (min-width: 768px) {
    #sidebar {
        border-left: 1px solid #c4c4c4;
        float: left;
        overflow: hidden;
        position: relative;
        transform: none;
        width: 40%;
    }
}

#sidebar.active {
    left: 0;
    transform: none;
    transition-duration: 0.7s;
}

@media (min-width: 768px) {
    #sidebar.active {
        right: 0;
        position: relative;
        transform: none;
        transition-duration: 0.7s;
        width: 40%;
    }
}

.sidebar_heading {
    float: left;
    width: 40%;
}

/*Search*/
.heading_search {
    border-bottom: 1px solid #c4c4c4;
    padding: 10px 29px 10px 20px;
    overflow: hidden;
}

.search_bar {
    display: inline-block;
    text-align: right;
    width: 60%;
}

.search_bar .stylish-input-group {
    position: relative;
}

.search_bar input {
    background: none;
    border-bottom: 1px solid #cdcdcd;
    font-size: 1rem;
    height: 25px;
    padding: 2px 30px 4px 6px;
    width: 80%;
}

.search_bar .input-group-addon {
    position: absolute;
    right: 28px;
}

.search_bar .input-group-addon button {
    background: rgba(0, 0, 0, 0) none repeat scroll 0 0;
    border: medium none;
    color: #707070;
    font-size: 18px;
    padding: 0;
    position: absolute;
}

.search_bar .input-group-addon button svg {
    padding-top: 5px;
}

.chat_ib {
    float: left;
    padding: 0 0 0 15px;
    width: 75%;
}

.chat_ib h5 { 
    color: #464646; 
    font-size: 15px; 
    margin: 0 0 8px 0;
}

.chat_ib h5 span { 
    float: right;
    font-size: 13px; 
}

.chat_ib p { 
    font-size: 14px; 
    color: #2b2b2b;
    margin: auto;
}

.chat_img {
    float: left;
    width: 11%;
}

.chat_people { 
    overflow: hidden;
    clear: both;
}

.chat_list {
    border-bottom: 1px solid #c4c4c4;
    margin: 0;
    padding: 18px 16px 10px;
}

.inbox_chat { 
    height: 540px;
    overflow-y: scroll;
}

.active_chat { 
    background: #dae3f2;
}

h5.incoming_msg_user {
    color: #464646;
    font-size: 15px;
    margin: 0 0 8px 30px;
}

.received_msg {
    display: inline-block;
    padding-left: 30px;
    vertical-align: top;
    width: 92%;
}

.received_withd_msg {
    width: 57%;
}

.received_withd_msg p {
    background: #dae3f2 none repeat scroll 0 0;
    border-radius: 3px;
    color: #2b2b2b;
    font-size: 14px;
    margin: 0;
    padding: 10px 10px 10px 12px;
    width: 100%;
}

.messages {
    padding: 30px;
    width: 100%;
}

@media (min-width: 768px) {
    .messages {
        width: auto;
    }
}

.time_date {
    color: #747474;
    display: block;
    font-size: 12px;
    margin: 8px 0 0;
}

/*Messages*/
.sent_msg {
    float: right;
    margin-right: 20px;
    width: 46%;
}

.sent_msg p {
    background: #05728f none repeat scroll 0 0;
    border-radius: 3px;
    font-size: 14px;
    margin: 0; color:#fff;
    padding: 10px 12px 10px 12px;
    /*width: 100%;*/
}

.outgoing_msg {
    overflow: hidden;
    margin: 12px 0 12px;
}

.input_msg_write input {
    background: rgba(0, 0, 0, 0) none repeat scroll 0 0;
    border: medium none;
    color: #4c4c4c;
    font-size: 15px;
    min-height: 48px;
    padding-left: 30px;
    width: 100%;
}

.type_msg {
    border-top: 1px solid #c4c4c4;
    float: left;
    position: relative;
    width: 60%;
}

.msg_send_btn {
    background: #05728f none repeat scroll 0 0;
    border: medium none;
    border-radius: 3px;
    color: #fff;
    cursor: pointer;
    height: 35px;
    position: absolute;
    right: 0;
    top: 7px;
    width: 52px;
}

.msg_send_btn svg {
    fill: #ffffff;
    padding-top: 4px;
}

.msg_history {
    height: 516px;
    overflow-y: auto;
}