Image overlapping in div focus - html

Question

I can't figure out how to make a div move when another div is clicked.
Here is a jsfiddle demo: https://jsfiddle.net/vufosn18/ (make sure you make it fullscreen so the image doesn't overlap with the text)
I have been googling around for a bit and can't find anything, so I tried:
#feas:focus #construct{
margin-top: 300px;
position: absolute;
}
When I click on feasibility it gives construction management a margin-top of 300px.
Any help is appreciated, if your answer could be in JavaScript/CSS that would be great.

Answer 1

It would be hard to fix all your issues in one answer. But I'll try to get you going:
Everything is absolute, I think this is not recommended for your case. Read more
You are using ID's everywhere, causing lots of duplicate styles. Try changing this to classes. This will be much easier to manage small changes.
I recommend checking that you are working html strict, this may prevent having rare situations in different browsers. (FYI)
To answer your question:
There are a lot of plugins out there that are easy to use. I suggest you to use one of them instead:
https://jqueryui.com/accordion/
A step by step example (just googled it)
..
For what you want to show in each tab you can have independent html/css. By default is img and p relative. So they won't overlap then.

Answer 2

here is a simple animation
Click on hello and the div with the word world will move down
function click(){
document.getElementById('bottom').style.top="50px"
}
document.getElementById('top').addEventListener('click',click,false)
#top{
width: 50px;
height:50px;
border:solid;
}
#bottom{
position:relative;
top:0px;
width: 50px;
height:50px;
border:solid;
transition-property:top;
transition-duration:3s;
}
<div id="top">
hello
</div>
<div id="bottom">
world
</div>