Position absolute inside a scrolling overflow container - html

Question

I have the following code:
.chat-content {
height: 455px;
min-height: 100%;
width: 100%;
overflow-y: auto;
background: #cacac8;
}
.chat-content,
.chat-content-inner {
position: relative;
}
.chat-container {
position: relative;
overflow: hidden;
}
.top-buttons {
position: relative;
display: block;
padding: 10px;
padding-left: 80px;
height: 50px;
background: #dddddb;
top: 0;
right: 0;
left: 0
}
.top-buttons .badge {
position: relative;
border-radius: 3px;
padding: 7px;
margin-left: 10px;
margin-top: 5px;
}
.top-buttons .badge:after {
content: "";
position: absolute;
top: 5px;
left: -5px;
border-style: solid;
border-width: 5px 5px 5px 0px;
border-color: transparent #999;
display: block;
width: 0;
z-index: 1;
}
.top-buttons h2 {
font-weight: 300;
color: #858689
}
.chat-pusher {
position: relative;
}
/*Styling Chat Sidebar Menu*/
.chat-users-menu {
position: absolute;
top: 0;
left: -110px;
z-index: 100;
visibility: visible;
width: 180px;
height: 100%;
background: #858689;
-webkit-transition: all .5s;
transition: all .5s;
overflow-y: auto;
}
/*Toggle Class for Moving Chat Menu Users*/
.chatbar-toggle {
left: 0;
}
/*/Toggle Class for Moving Chat Menu Users*/
.chat-users-menu ul {
margin: 0;
padding: 0;
list-style: none;
}
.chat-users-menu .menu-header {
padding: 10px;
text-align: right;
color: #fff;
font-size: 1.5em;
}
.chat-users-menu ul li a {
position: relative;
display: block;
height: 70px;
padding: 15px 90px 10px 10px;
outline: none;
box-shadow: inset 0 -1px rgba(0, 0, 0, .2);
color: #fff;
text-shadow: 0 0 1px rgba(255, 255, 255, .1);
font-weight: 700;
-webkit-transition: background .3s, box-shadow .3s;
transition: background .3s, box-shadow .3s;
}
.chat-users-menu ul li a .chat-name {
display: block;
text-overflow: ellipsis;
width: 100px;
font-size: 1.05em;
}
.chat-users-menu ul li a .badge {
position: absolute;
background: #d24d33;
color: #fff;
top: 10px;
right: 10px;
}
.chat-users-menu ul li a:hover {
background: rgba(0, 0, 0, .2);
color: #fff;
text-decoration: none;
}
.chat-users-menu ul li a .label {
margin-top: 2px;
}
.chat-users-menu ul li .user-img {
position: absolute;
right: 15px;
top: 15px;
display: block;
max-width: 40px;
}
.chat-users-menu ul li .user-img img {
display: inline-block;
max-width: 100%;
border-radius: 50%;
box-shadow: 0 0 0 5px #fff;
}
/* And finally! Messages List and Chat Contents */
.chat-messages {
padding: 15px;
margin-bottom: 5px;
}
.chat-messages-with-sidebar {
margin-left: 70px;
}
.chat-messages ul {
list-style: none;
margin: 0;
padding: 0;
}
.chat-messages li {
margin-bottom: 10px;
}
.chat-messages li.left .chat-body {
position: relative;
margin-left: 70px;
padding: 10px;
background: #fff;
border-radius: 3px;
}
.chat-messages li.left .chat-body :before {
/*content: "";
position: absolute;
top: 20%;
left: -7px;
border-style: solid;*/
border-width: 6px 7px 6px 0;
border-color: transparent #fff;
/*display: block;
width: 0;*/
}
.chat-messages li.right .chat-body {
position: relative;
margin-right: 70px;
padding: 10px 15px;
background: #fff;
border-radius: 3px;
}
.chat-messages li.right .chat-body :after {
content: "";
position: absolute;
top: 20%;
right: -7px;
border-style: solid;
border-width: 6px 0 6px 7px;
border-color: transparent #fff;
display: block;
width: 0;
}
.chat-messages .badge {
font-size: .85em;
float: right;
border-radius: 3px;
background: #c0c2c7;
}
.chat-messages .chat-body .name {
font-size: 1em;
font-weight: 700;
}
.chat-messages .user-img {
margin-top: 8px;
display: block;
max-width: 45px;
}
.chat-messages .user-img img {
display: inline-block;
max-width: 100%;
border-radius: 50%;
box-shadow: 0 0 0 6px #fff;
}
.chat-message-form {
padding: 15px;
background: #dddddb;
display: block
}
.nano {
position: relative;
width: 100%;
height: 100%;
overflow: hidden;
}
.nano>.nano-content {
position: absolute;
overflow: scroll;
overflow-x: hidden;
top: 0;
right: 0;
bottom: 0;
left: 0;
}
.nano>.nano-content:focus {
outline: thin dotted;
}
.nano>.nano-content::-webkit-scrollbar {
visibility: hidden;
}
.has-scrollbar>.nano-content::-webkit-scrollbar {
visibility: visible;
}
.nano>.nano-pane {
background: rgba(0, 0, 0, .25);
position: absolute;
width: 10px;
right: 0;
top: 0;
bottom: 0;
visibility: hidden\9;
/* Target only IE7 and IE8 with this hack */
opacity: .01;
-webkit-transition: .2s;
-moz-transition: .2s;
-o-transition: .2s;
transition: .2s;
}
.nano>.nano-pane>.nano-slider {
background: #fff;
position: relative;
margin: 0;
}
.nano:hover>.nano-pane,
.nano-pane.active,
.nano-pane.flashed {
visibility: visible\9;
/* Target only IE7 and IE8 with this hack */
opacity: 0.99;
}
.msg-is-typing-container {
position: absolute;
bottom: 0;
}
<div class="chat-container">
<div class="chat-pusher">
<div class="chat-content">
<!-- this is the wrapper for the content -->
<div class="nano">
<!-- this is the nanoscroller -->
<div class="nano-content">
<div class="">
<!-- extra div for emulating position:fixed of the menu -->
<!-- Top Navigation -->
<div class="">
<div class="chat-messages chat-messages-with-sidebar">
<ul id="thread-msg-content" data-msg-thread-id="">
<li class="left clearfix">
<div class="user-img pull-left">
<img src="http://www.simpsonspark.com/images/persos/contributions/bart-simpson-20516.gif" alt="User Avatar" width="50" height="50" />
</div>
<div class="chat-body clearfix">
<div class="header"> <span class="name">Administrator</span><span class="name"></span> <span class="badge"><i class="fa fa-clock-o"></i>2018-06-21 04:38:44</span> …
<div class="chat-body clearfix">
<p>fdfdffdfddfd</p>
</div>
</li>
<li class="left clearfix">
<div class="user-img pull-left">
<img src="http://www.simpsonspark.com/images/persos/contributions/bart-simpson-20516.gif" alt="User Avatar" width="50" height="50" />
</div>
<div class="chat-body clearfix">
<div class="header"> <span class="name">Administrator</span><span class="name"></span> <span class="badge"><i class="fa fa-clock-o"></i>2018-06-21 04:38:44</span> …
<div class="chat-body clearfix">
<p>fdfdffdfddfd</p>
</div>
</li>
<li class="left clearfix">
<div class="user-img pull-left">
<img src="http://www.simpsonspark.com/images/persos/contributions/bart-simpson-20516.gif" alt="User Avatar" width="50" height="50" />
</div>
<div class="chat-body clearfix">
<div class="header"> <span class="name">Administrator</span><span class="name"></span> <span class="badge"><i class="fa fa-clock-o"></i>2018-06-21 04:38:44</span> …
<div class="chat-body clearfix">
<p>fdfdffdfddfd</p>
</div>
</li>
</ul>
<div class="msg-is-typing-container">
<p class="msg-is-typing">Administrator is typing ...</p>
</div>
</div>
</div>
</div>
<!-- /chat-content-inner -->
</div>
</div>
<!-- /nano -->
</div>
<!-- /chat-content -->
</div>
<!-- /chat-pusher -->
</div>
Result I want: https://www.awesomescreenshot.com/image/3438835/f249eeacac535cd7715d72d9c3b1dcb4
I want to show div ".msg-is-typing-container" to the bottom of the container ".chat-content", but when the scroll bar is shown the div ".msg-is-typing-container" is not displayed at the bottom of the container.
How to fix this issue?
Thank you!

Answer 1

I altered .msg-is-typing-container's CSS to achieve the positioning I believe you want.
.msg-is-typing-container{
position: relative;
border: 1px solid red;
display: inline-block;
padding: 5px 10px;
}
I then added a matching id as shown to this element: <p class="msg-is-typing" id="msg-is-typing"></p>
The below jQuery & JavaScript hides the typing container .msg-is-typing-container until the .nano-content container is scrolled to the bottom, at which time the container fades into view. I also added a JavaScript typing effect found here at w3Schools. You can see this JSFiddle where I tried to answer the question as I understood it.
$('.msg-is-typing-container').hide();
$(document).ready(function() {
var i = 0;
var txt = 'Administrator is typing ...And Only Shows when div is scolled to bottom';
var speed = 100;
function typeWriter() {
if (i < txt.length ) {
document.getElementById("msg-is-typing").innerHTML += txt.charAt(i);
i++;
setTimeout(typeWriter, speed);
}
}
$(".nano-content").scroll(function(){
if ($(this).scrollTop()>0) {
$('.msg-is-typing-container').fadeIn(2000);
}
else{
$('.msg-is-typing-container').fadeOut(1000);
}
})
typeWriter();
})

Answer 2

.chat-messages {
position: relative;
margin: 50px;
}
.msg-is-typing-container{
position:absolute;
bottom:-25px;
}