#screenreadertrick {
  position: absolute !important; /* Outside the DOM flow */
  height: 1px; width: 1px; /* Nearly collapsed */
  overflow: hidden;
  clip: rect(1px 1px 1px 1px); /* IE 7+ only support clip without commas */
  clip: rect(1px, 1px, 1px, 1px); /* All other browsers */
}

/* old opener */

.chat-btn {
    position: fixed;
    bottom: /*2rem*/18px;
    right: /*2rem*/15px;
    z-index: 999999;
    text-decoration: none;
    display: -moz-flex;
    display: -o-flex;
    display: -webkit-flex;
    display: flex;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-align-items: center;
    align-items: center;
    width: 60px;
    height: 60px;
    background-color: #42a5f5;
    color: #ffffff;
    border-radius: 50%;
    font-size: 30px;
}

.chat-btn div {
    display: inline;
    transition: transform 0.8s;
    visibility: visible;
    opacity: 1;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%) rotateZ(0);
}

.chat-btn div.hide {
    visibility: hidden;
    opacity: 0;
    transform: translate(-50%, -50%) rotateZ(180deg);
    transition: transform 0.8s;
}
    
/*Chatbot Starts*/

.chat-icon button {
  font-size: 32px;
  line-height: 55px;
  -webkit-transition: all .7s ease-out;
  -moz-transition: all .7s ease-in-out;
  transition: all .7s ease-in-out;
  color: #fff;
  background: transparent;
  border: none;
  /*width: 50px;*/
  height: 50px;
  line-height: 50px;
  border-radius: 50px;
}

.chat-bottom a button {
    color: #737373;
    transition: 0.4s all ease-in;
    cursor: pointer;
    font-size: 18px;
}

.chat-bottom a button:hover {
    color: #f16e00;
}

button.fa-paper-plane {
  border: none;
  padding: 0;
  background: none;
  height: 30px;
}

/* get rid of this? */
.chatbot {
  font-family: 'Poppins', sans-serif;
}

.chatbot .chat-box {
    bottom: 20px;
    position: fixed;
    margin: 1em;
    right: 0;
    z-index: 10998;
}

.chat-icon {
    /* latest fixes */
    /*display: block;*/
    display: flex;
    align-items: center;
    justify-content: center;
    
    width: 56px;
    height: 56px;
    border-radius: 50%;
    text-align: center;
    color: #f0f0f0;
    margin: 25px auto 0;
    box-shadow: 0 0 4px rgba(0, 0, 0, .14), 0 4px 8px rgba(0, 0, 0, .28);
    cursor: pointer;
    -webkit-transition: all .1s ease-out;
    transition: all .1s ease-out;
    position: relative;
    z-index: 10998;
    overflow: hidden;
    background: #42a5f5;
}

.chat-icon i {
    font-size: 2em;
    line-height: 55px;
    -webkit-transition: all .2s ease-out;
    -webkit-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
}

/*Chatbox*/

.chat {
    position: fixed;
    right: 85px;
    bottom: 20px;
    width: 450px;
    /*font-size: 14px;*/
    line-height: 25px;
    font-weight: 500;
    -webkit-font-smoothing: antialiased;
    font-smoothing: antialiased;
    opacity: 0;
    display: none; /* XXX */
    box-shadow: 1px 1px 100px 2px rgba(0, 0, 0, 0.22);
    border-radius: 10px;
    -webkit-transition: all .2s ease-out;
    -webkit-transition: all .2s ease-in-out;
    transition: all .2s ease-in-out;
}

.chat_fullscreen {
    position: fixed;
    right: 0px;
    bottom: 0px;
    top: 0px;
}

.chat, .chat_header {
    font-family: 'Montserrat', sans-serif !important;
}

.chat_header {
    text-align: center;
    font-weight: 500;
    color: #fff;
    height: 55px;
    background: #42a5f5;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat_header {
  position: relative;
}

.chat_header h2 {
  font-size: 2.5em;
  margin: 0;
  padding: 8px 0 0 0; /* override document style */
  color: #ffffff;
}

.chat_header button {
  background: transparent;
  border: none;
  color: #fff;
  padding: 0;
  margin: 0;
  font-size: 20px !important;
}    
    
.chat_header button {
  position: absolute;
  top: 50%;
  right: 20px;
  transform: translateY(-50%);
}

.chat_header .span {
    float: right;
}

.chat.is-visible {
    display: block; /* XXX */
    opacity: 1;
    -webkit-animation: zoomIn .2s cubic-bezier(.42, 0, .58, 1);
    animation: zoomIn .2s cubic-bezier(.42, 0, .58, 1);
}

.is-hide {
    opacity: 0
}

.chat_field {
    position: relative;
    margin: 5px 0 5px 0;
    width: 75%;
    font-size: 17px;
    line-height: 30px;
    font-weight: 500;
    color: #4b4b4b;
    -webkit-font-smoothing: antialiased;
    font-smoothing: antialiased;
    border: none;
    outline: none;
    display: inline-block;
}

.chat_field.chat_message {
    height: 30px;
    resize: none;
    font-size: 17px;
    line-height: 20px;
    font-weight: 400;
    font-family: inherit;
}

.chat-bottom {
    width: 100%;
    display: inline-block;
    text-align: center;
    background: #fff;
    border-top: 1px solid #eee;
    border-bottom-right-radius: 10px;
    border-bottom-left-radius: 10px;
}

.chat-bottom a {
    display: inline-block;
    text-align: center;
}

.chat-bottom .camera-icon {
    float: left;
    background: rgba(0, 0, 0, 0);
}

.chat-bottom .send-icon {
    float: right;
    background: rgba(0, 0, 0, 0);
}

.chat-bottom a {
    width: 35px;
    height: 35px;
    box-shadow: none;
    margin: 5px;
}

.chat-bottom a i {
    font-size: 1.6em;
    line-height: 35px;
    color: #bbb;
}

.chat-bottom a i:hover {
    color: #42a5f5;
}

.chat_converse:focus, button.fas:focus, .chat_message:focus {
  outline: .2rem solid #f16e00;
}

.chat-icon button:focus {
  outline: none !important;
  box-shadow: 0 0 3pt 2pt #f16e00;
}

.chat-icon {
  padding: 3px;
}

.chat_converse {
    position: relative;
    background: #fff;
    margin: 0; /*margin: 6px 0 0px 0;*/
    height: 450px;
    min-height: 0;
    font-size: 17px; /* chat font size */
    line-height: 25px;
    overflow-y: auto;
    width: 100%;
    float: right;
    padding-bottom: 50px;
}

.chat .chat_converse .chat_msg_item {
    position: relative;
    margin: 8px 0 15px 0;
    padding: 8px 10px;
    max-width: 75%;
    display: block;
    word-wrap: break-word;
    border-radius: 3px;
    -webkit-animation: zoomIn .5s cubic-bezier(.42, 0, .58, 1);
    animation: zoomIn .5s cubic-bezier(.42, 0, .58, 1);
    clear: both;
    z-index: 10999;
}

.status {
    margin: 45px -50px 0 0;
    float: right;
    font-size: 11px;
    opacity: 0.3;
}

.status2 {
    margin: -10px 20px 0 0;
    float: right;
    display: block;
    font-size: 11px;
    opacity: 0.3;
    clear: both;
}

.chat .chat_converse .chat_msg_item .chat_avatar {
    position: absolute;
    top: 0;
}

.chat .chat_converse .chat_msg_item.chat_msg_item_admin .chat_avatar {
    left: -52px;
    background: rgba(0, 0, 0, 0.03);
}

.chat .chat_converse .chat_msg_item .chat_avatar,
.chat_avatar img {
    width: 40px;
    height: 40px;
    text-align: center;
    border-radius: 50%;
}

.chat .chat_converse .chat_msg_item.chat_msg_item_admin {
    margin-left: 60px;
    float: left;
    background: rgba(0, 0, 0, 0.03);
    color: #666;
}

.chat .chat_converse .chat_msg_item.chat_msg_item_user {
    margin-right: 20px;
    float: right;
    background: #42a5f5;
    color: #eceff1;
}

.chat .chat_converse .chat_msg_item.chat_msg_item_admin:before {
    content: '';
    position: absolute;
    top: 15px;
    left: -12px;
    z-index: 10998;
    border: 6px solid transparent;
    border-right-color: rgba(255, 255, 255, .4);
}

#otherSideTyping {
    background-color: #fff;
    margin-left: 30px;
    display: flex;
    width: 100%;
    align-items: center;
}

#otherSideTyping h4 {
  margin-right: 10px;
  margin-left: 15px;
}

#otherSideTyping .dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 3px;
    background: #303131;
    animation: wave 1.3s linear infinite;
}

#otherSideTyping .dot:nth-child(2) {
    animation-delay: -1.1s;
}

#otherSideTyping .dot:nth-child(3) {
    animation-delay: -0.9s;
}

.chat_username {
    clear: both;
}
.chat_username p {
    position: relative;
    float: right;
    margin: 0px 20px -5px 0px;
    font-size: 12px;
    color: #ccc;
}

.chat_botname {
  clear: both;
}

.chat_botname p {
    position: relative;
    float: left;
    margin: 0px 0px -6px 60px;
    font-size: 12px;
    color: #42a5f5;
}

.chat-btn, .chat_header, .chat .chat_converse .chat_msg_item.chat_msg_item_user, .chat_header .fa-redo {
    background-color: #db4064;
    color: #ffffff;
}


@keyframes wave {
    0%,
    60%,
    100% {
        transform: initial;
    }
    30% {
        transform: translateY(-15px);
    }
}


/*Chatbox scrollbar*/
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    border-radius: 0;
}

::-webkit-scrollbar-thumb {
    margin: 2px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.2);
}


/*Element state*/
.is-active {
    -webkit-transform: rotate(180deg);
    transform: rotate(180deg);
    -webkit-transition: all 1s ease-in-out;
    transition: all 1s ease-in-out;
}

.is-float {
    box-shadow: 0 0 6px rgba(0, 0, 0, .16), 0 6px 12px rgba(0, 0, 0, .32);
}


/*Animation*/

@-webkit-keyframes zoomIn {
    0% {
        -webkit-transform: scale(0);
        transform: scale(0);
        opacity: 0.0;
    }
    100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes zoomIn {
    0% {
        -webkit-transform: scale(0);
        transform: scale(0);
        opacity: 0.0;
    }
    100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 1;
    }
}

@-webkit-keyframes load {
    0% {
        -webkit-transform: scale(0);
        transform: scale(0);
        opacity: 0.0;
    }
    50% {
        -webkit-transform: scale(1.5);
        transform: scale(1.5);
        opacity: 1;
    }
    100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 0;
    }
}

@keyframes load {
    0% {
        -webkit-transform: scale(0);
        transform: scale(0);
        opacity: 0.0;
    }
    50% {
        -webkit-transform: scale(1.5);
        transform: scale(1.5);
        opacity: 1;
    }
    100% {
        -webkit-transform: scale(1);
        transform: scale(1);
        opacity: 0;
    }
}

@media only screen and (min-width: 360px) and (max-width: 399px) {
    .chat {
        width: 275px;
    }
    .chat_field {
        width: 80%;/*65%;*/
    }
}

@media only screen and (min-width: 400px) and (max-width: 767px) {
    .chat {
        width: 300px;
    }
}

/* TABLETS PORTRAIT */

@media only screen and (min-width: 768px) and (max-width: 1023px) {
    .chat {
        width: 300px;
    }
    .chat_field {
        width: 80%;/*65%;*/
    }
}


/* safari fixes */

@media (min-width: 375px) and (max-width: 812px) {
.chat-icon {
    
    width: 90px!important;
    height: 90px!important;
}

.chat-icon button {
    margin-top: 17px;
    margin-left: -47px;
    font-size: 48px!important;
}
  /* Shift comment icon on the left a bit */
  /*.chat-icon button.fa-comment-dots {
      margin: 0 0 0 -5px !important;
  }*/
}

@media (min-width: 768px) and (max-width: 1024px) {
.chat-icon {
    
    width: 90px!important;
    height: 90px!important;
}

.chat-icon button {
    margin-top: 17px;
    margin-left: -47px;
    font-size: 48px!important;
}

}


/* Make the icon link position relative*/
.chat-icon {
    position: relative;
}

/* Make the icon link position absolute and position it in center */
.chat-icon button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    margin: 0 !important;
}

/* smaller heading on mobile */
@media (max-width: 614px) {
  .chat_header h2 {
    font-size: 1.5em;
  }
}

Began life as a copy of #1028274