JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
<link href="style.css" rel="stylesheet">
<link href="chat.css" rel="stylesheet">

<div class="chat">
    <div class="chat-wrapper">
        <div class="chat-dock">
            <!--<div class="chat-windows-dock">
                <div class="chat-window-dock">
                    <div class="chat-window">
                    </div>
                </div>
                <div class="chat-window-dock">
                    <div class="chat-window">
                    </div>
                </div>
            </div>-->
            <div class="chat-list-dock">
                <div class="chat-header">
                    <span class="chat-title">
                        Window title
                    </span>
                    <span class="title-btns">
                        <a class="btn btn-expand btn-show-chat-list">--</a>
                    </span>
                </div>
                <div class="chat-list">
                    <div class="chat-header">
                        <span class="chat-title">
                            Window title
                        </span>
                        <span class="title-btns">
                            <a class="btn btn-collapse btn-hide-chat-list">--</a>
                        </span>
                    </div>
                    <div class="wl-1"></div>
                    <div class="chat-search">
                        <div class="chat-search-cnt">
                            <div class="chat-search-btn-search-cnt">
                                <div class="btn-search"></div>
                            </div>
                            <textarea name="textarea" class="chat-search-edit placeholder" placeholder="Search"></textarea>
                        </div>
                    </div>
                    <div class="wl-1"></div>
                    <div class="chat-user-list-cnt">
                        <ul class="chat-user-list">
                            <li...

CSS

/* chat css */
*{
    font: 11px Arial, Tahoma, Verdana, sans-serif;
}
.chat{
    display:block;
}
.chat-wrapper{
    position:fixed;
    bottom:0;
    right: 0;
    height: 30px;
    left: auto;
}
.chat-dock{
    clear: both;
    display: block;
    background-color: blue;
    z-index: 2000;
}
.chat-windows-dock {
    display:block;
    float: left;
    position: relative;
    clear: both;
}
.chat-window-dock, .chat-list-dock {
    margin-right: 10px;
    float: left;
    position: relative;
    height: 30px;
    z-index: 2001;
}
.chat-window-dock {
    width: 265px;
}
.chat-list-dock {
    width: 250px;
}
.chat-list-dock, .chat-list{
    border: 2px solid #fff;
    background: #e4e4e4;
    box-shadow:0px 0px 5px rgba(0, 0, 0, 0.7);
    border-radius: 10px;
    border-bottom-left-radius: 0;
    border-bottom-right-radius: 0;
}
.chat-window-dock, .chat-window{
    border: 2px solid #fff;
    background: #e4e4e4;
    box-shadow:0px 0px 5px rgba(0, 0, 0, 0.7);
}
.chat-window{
    display: block;
    position: absolute;
    left: auto;
    right: -2px;
    bottom: 0;
    height: 265px;
    width: 100%;
    z-index: 2002;
}
.chat-list {
    display: block;
    position: absolute;
    left: auto;
    right: -2px;
    bottom: 0;
    height: 285px;
    width: 100%;
    height: 400px;
    z-index: 2002;
}
.chat-header{
    height: 30px;
    line-height: 30px;
    vertical-align:middle;
    padding: 5px 5px 0 5px;
    margin: -5px -5px 0 -5px;
}
.chat-header span.chat-title{
    color: #387092;
    font-weight: bold;
    font-size: 12px;
    padding: 0 10px;
}
.wl-1 {
    height: 1px;
    background: #fff;
}
.btn {
    cursor: pointer;
    text-decoration:none;
}
.title-btns{
    float:right;
    margin-left: 24px;
    font-size: 12px;
}
.title-btns .btn{
    text-align:center;
    display: inline-block;
    padding: 9px 5px;
    width:12px;
    height:12px;
}
.btn-collapse{
    background:url() no-repeat center center;
}
.btn-expand{
    background:url() no-repeat center...