How to keep Divs in place without absolute position - css

Question

I must be misunderstaning something in CSS as my dropdown box using a library (dat-gui) is doing this:
I have tried switching to position: absolute for the divs beneath the dat-gui container, which breaks the divs beneath it.
Funnily enough, when I use the SO embedded snippet, it actually works. So check out an actual deploy of the site at: https://stack-test.netlify.com/
function UI (parentDiv) {
// parentDiv.querySelector('#dataset_div').style.display = 'none'
// parentDiv.querySelector('#channel_div').style.display = 'none'
// parentDiv.querySelector('#OpenCORLinkButton').style.display = 'none'
// parentDiv.querySelector('#instructions_div').style.display = 'none'
var _this = this
_this.dataType = 'scatter'
const gui = new dat.GUI({autoPlace: false})
gui.domElement.id = 'gui'
gui.close()
document.getElementsByClassName('dat-gui-container')[0].appendChild(gui.domElement)
var folder = gui.addFolder('Channels')
var settings = {}
var checkboxes = []
var checkboxElements = []
this.createDatGuiDropdown = function (channels, onchangeFunc) {
_this.channels = [...channels]
if (channels[0].toLowerCase().includes('time')){
channels.shift()
}
checkboxes = []
for (let i in _this.channels) {
let name = _this.channels[i]
let checkbox = {}
checkbox[name] = false
checkboxes.push(checkbox)
var el = folder.add(checkboxes[i], name)
checkboxElements.push(el)
el.__checkbox.onclick = onchangeFunc
}
folder.open()
}
}
var ui = new UI('unused')
ui.createDatGuiDropdown(['one', 'two'], function(){console.log('clicked')})
/*//////////////////////////////////////////////////////////////////
[ dat-gui ]*/
.dat-gui-container{
position: absolute;
top: 0;
left: 0;
right: 0;
height: 95%;
z-index: 5;
}
/*//////////////////////////////////////////////////////////////////
[ login ]*/
.limiter {
width: 100%;
margin: 0 auto;
}
.container-login100 {
width: 100%;
display: -webkit-box;
display: -webkit-flex;
display: -moz-box;
display: -ms-flexbox;
display: flex;
flex-wrap: wrap;
justify-content: center;
align-items: center;
padding: 10px;
position: relative;
background-position: center;
background-size: cover;
background-repeat: no-repeat;;
}
.wrap-login100 {
width: 390px;;
background: #fff;
border-radius: 10px;
position: relative;
}
.wrap-data100 {
width: 90%;
background: #fff;
border-radius: 10px;
position: relative;
}
/*==================================================================
[ Form ]*/
.login100-form {
width: 100%;
}
.login100-form-title {
font-family: Ubuntu-Bold;
font-size: 30px;
color: #403866;
line-height: 1.2;
text-transform: uppercase;
text-align: center;
width: 100%;
display: block;
}
/*==================================================================
[ Restyle Select2 ]*/
.select2-container {
display: block;
max-width: 100% !important;
width: auto !important;
}
.select2-container .select2-selection--single {
display: -webkit-box;
display: -webkit-flex;
display: -moz-box;
display: -ms-flexbox;
display: flex;
align-items: center;
background-color: rgba(171, 171, 189, 0.233);
border: none;
height: 40px;
outline: none;
position: relative;
left: -40px;
}
/*------------------------------------------------------------------
[ in select ]*/
.select2-container .select2-selection--single .select2-selection__rendered {
font-family: Ubuntu-Bold;
font-size: 18px;
color: #555555;
line-height: 1.2;
padding-left: 0px ;
background-color: transparent;
}
.select2-container--default .select2-selection--single .select2-selection__arrow {
height: 100%;
top: 50%;
transform: translateY(-50%);
right: 0px;
display: -webkit-box;
display: -webkit-flex;
display: -moz-box;
display: -ms-flexbox;
display: flex;
align-items: center;
justify-content: flex-end;
}
.select2-selection__arrow b {
display: none;
font-family: Material-Design-Iconic-Font !important;
font-size: 18px;
color: #555555;
}
.select2-selection__arrow {
content: '\f312';
font-family: Material-Design-Iconic-Font !important;
font-size: 18px;
color: #555555;
}
/*------------------------------------------------------------------
[ Dropdown option ]*/
.select2-container--open .select2-dropdown {
z-index: 1251;
width: calc(100% + 2px);
border: 0px solid transparent;
border-radius: 10px;
overflow: hidden;
background-color: rgba(171, 171, 189, 1);
left: -40px;
box-shadow: 0 3px 10px 0px rgba(0, 0, 0, 0.2);
-moz-box-shadow: 0 3px 10px 0px rgba(0, 0, 0, 0.2);
-webkit-box-shadow: 0 3px 10px 0px rgba(0, 0, 0, 0.2);
-o-box-shadow: 0 3px 10px 0px rgba(0, 0, 0, 0.2);
-ms-box-shadow: 0 3px 10px 0px rgba(0, 0, 0, 0.2);
}
#media (max-width: 576px) {
.select2-container--open .select2-dropdown {
left: -12px;
}
}
.select2-dropdown--above {top: -38px;}
.select2-dropdown--below {top: 10px;}
.select2-container .select2-results__option[aria-selected] {
padding-top: 10px;
padding-bottom: 10px;
padding-left: 24px;
}
#media (max-width: 576px) {
.select2-container .select2-results__option[aria-selected] {
padding-left: 12px;
}
}
.select2-container .select2-results__option[aria-selected="true"] {
background: #403866;
color: white;
}
.select2-container .select2-results__option--highlighted[aria-selected] {
background: #827ffe;
color: white;
}
.select2-results__options {
font-family: Ubuntu-Bold;
font-size: 14px;
color: #555555;
line-height: 1.2;
}
.select2-search--dropdown .select2-search__field {
border: 1px solid #aaa;
outline: none;
font-family: Ubuntu-Bold;
font-size: 15px;
color: #333333;
line-height: 1.2;
}
.wrap-input100 .dropDownSelect2 .select2-container--open {
width: 100% !important;
}
.wrap-input100 .dropDownSelect2 .select2-dropdown {
width: calc(100% + 2px) !important;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.7.6/dat.gui.js"></script>
<!DOCTYPE html>
<html lang="en">
<head>
<title>Blackfynn Exporter</title>
<meta charset="UTF-8">
<script src="https://cdn.plot.ly/plotly-latest.min.js"></script>
</head>
<body>
<div id='blackfynn-panel' style="position: relative;">
<div class="dat-gui-container"></div>
<div class="container-login100 datasetUI" id="dataset_div">
<div class="wrap-data100 p-t-5 p-b-5 datasetUI">
<form class="contact100-form validate-form">
<span class="login100-form-title">
Data Viewer
</span>
<div class=" input100 wrap-input100 input100-select bg1 datasetUI">
<span class="label-input100"></span>
<div id="channel_div">
<select class="js-select2" name="service" id="select_channel">
<option>Channel Selection</option>
</select>
<div class="dropDownSelect2"></div>
</div>
</div>
</form>
<br>
<div id="exportURL">
</div>
</div>
</div>
<div class="datasetUI" id="chart_div"></div>
</div>
</body>
</html>

Answer 1

If you have a look at the snippet you see that .dat-gui-container has position: absolute set. In your case you have to set position absolute to the element that gets animated, thus preventing the rest of the elements from moving around.