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var accordions = document.getElementsByClassName("accordion");
var i;

for (i = 0; i < accordions.length; i++) 
 accordions[i].addEventListener("click", function() 
 var patt = /(accordion-)(d)/gm;
 var match = patt.exec(this.id);
 panel = document.getElementById("panel-" + match[2]);

 if (panel.style.maxHeight) 
 panel.style.maxHeight = null;
 else 
 panels = document.getElementsByClassName('panel');
 for (j = 0; j < panels.length; j++) 
 if (panels[j].id != panel.id) 
 panels[j].style.maxHeight = null;
 if (accordions[j].id != this.id)
 accordions[j].classList.remove('active');
 
 
 panel.style.maxHeight = panel.scrollHeight + "px";
 

 this.classList.toggle("active");
 );

body 
 margin: 0;
 background-color: black;


.title 
 text-align: center;
 background-color: white;
 color: black;
 height: 100px;
 padding: 35px 0;
 margin: 0;
 width: 100%;
 z-index: 1;
 position: fixed;
 font-family: Clearface, sans-serif;
 /* Here you may change the name of the font family of the Header Title*/
 font-size: 40px;
 /* Here you may change the font size of the Header Title*/


.header #accordion-0 
 font-size: 25px;


#about 
 background-color: black;
 color: white;
 float: left;
 width: 50%;
 /* height: 100vh; */
 height: calc(100vh - 170px); /* new */
 overflow: auto; /* new */
 font-family: Clearface, sans-serif;
 margin-top: 170px;
 position: fixed;


#about h2 
 font-size: 80px;
 /* Here you may change the font size of the About Title in desktop*/
 padding: 30px 70px 0 70px;


#about p 
 font-size: 30px;
 /* Here you may change the font size of the About Paragraph in desktop*/
 padding: 70px;
 padding-top: 0;


#projects .accordion 
 background-color: #333648;
 color: white;
 cursor: pointer;
 padding: 20px;
 width: 100%;
 border: none;
 text-align: center;
 outline: none;
 font-size: 17px;
 transition: 0.5s;
 height: 20%;
 font-family: 'Univers LT Std', sans-serif;
 /* Here you may change the name of the font family of Each Project Link*/
 font-size: 20px;
 /* Here you may change the font size of Each Project Link*/
 opacity: 0.7;


#projects .active,
#projects .accordion:hover 
 background-color: #ccc;
 color: black;
 opacity: 1;


.panel 
 padding: 0 18px;
 background-color: white;
 max-height: 0;
 overflow-y: hidden;
 transition: max-height 0.3s ease-out;


.post 
 padding: 0 20%;


.img-responsive 
 display: block;
 max-width: 100%;
 height: auto;
 margin: 50px auto;


#projects 
 float: right;
 width: 50%;
 height: calc( 100vh - 170px); /* adjustment */
 overflow: auto; /* new */
 font-family: 'Univers LT Std', sans-serif;
 /* Here you may change the name of the font family of Each Project*/
 font-size: 20px;
 /* Here you may change the font size of Each Project*/
 margin-top: 170px;


#about-accordion h2,
#about-accordion p 
 font-family: Clearface, sans-serif;


#about-accordion .panel 
 background-color: black;
 color: white;


#about-accordion 
 font-size: 30px;
 /* Here you may change the font size of About Section in mobile*/



/* Smartphones (portrait and landscape) ----------- */

@media only screen and (min-device-width: 320px) and (max-device-width: 480px) 
 .header #accordion-0 
 padding-right: 1em;
 
 #emma-back 
 padding-left: 1em;
 
 #about 
 display: none;
 
 #projects 
 width: 100%;
 
 .title 
 display: flex;
 justify-content: space-between;
 align-items: center;
 



/* iPads (portrait and landscape) ----------- */

@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) 
 #about 
 display: none;
 
 #projects 
 width: 100%;
 
 .title 
 display: flex;
 justify-content: space-between;
 align-items: center;
 
 .header #accordion-0 
 padding-right: 1em;
 
 #emma-back 
 padding-left: 1em;
 



/* Desktops and laptops ----------- */

@media only screen and (min-width: 1224px) 
 #about-accordion 
 display: none;
 
 .header #accordion-0 
 display: none;
 
 #dash 
 display: none;
 



/* Large screens ----------- */

@media only screen and (min-width: 1824px) 
 #about-accordion 
 display: none;
 
 .header #accordion-0 
 display: none;
 
 #dash 
 display: none;
 

<h1 class="header title">
 <span id="emma-back"> Hello <br> Back </span>
 <span id="dash"> - </span>
 <span id="accordion-0" class="accordion">About Me</span>
</h1>

<div id="about">
 <h2>
 Hello!
 </h2>

 <p>
 Lorem Ipsum är en utfyllnadstext från tryck- och förlagsindustrin. Lorem ipsum har varit standard ända sedan 1500-talet, när en okänd boksättare tog att antal bokstäver och blandade dem för att göra ett provexemplar av en bok. Lorem ipsum har inte bara
 överlevt fem århundraden, utan även övergången till elektronisk typografi utan större förändringar. Det blev allmänt känt på 1960-talet i samband med lanseringen av Letraset-ark med avsnitt av Lorem Ipsum, och senare med mjukvaror som Aldus PageMaker.
 </p>
</div>

<div id="projects">
 <div id="about-accordion">
 <div id="panel-0" class="panel">
 <div class="post">
 <h2>
 Hello!
 </h2>

 <p>
 Lorem Ipsum är en utfyllnadstext från tryck- och förlagsindustrin. Lorem ipsum har varit standard ända sedan 1500-talet, när en okänd boksättare tog att antal bokstäver och blandade dem för att göra ett provexemplar av en bok. Lorem ipsum har inte bara
 överlevt fem århundraden, utan även övergången till elektronisk typografi utan större förändringar. Det blev allmänt känt på 1960-talet i samband med lanseringen av Letraset-ark med avsnitt av Lorem Ipsum, och senare med mjukvaror som Aldus
 PageMaker.
 </p>
 </div>
 </div>
 </div>
 <button id="accordion-1" class="accordion">Project 1</button>
 <div id="panel-1" class="panel">
 <div class="post">
 <h2>TITLE HEADING</h2>
 <p>
 Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
 survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
 publishing software like Aldus PageMaker including versions of Lorem Ipsum.
 </p>
 <div>
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 </div>
 </div>
 </div>

 <button id="accordion-2" class="accordion">Project 2</button>
 <div id="panel-2" class="panel">
 <div class="post">
 <h2>TITLE HEADING</h2>
 <p>
 Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
 survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
 publishing software like Aldus PageMaker including versions of Lorem Ipsum.


 </p>
 <div>
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 </div>
 </div>
 </div>

 <button id="accordion-3" class="accordion">Project 3</button>
 <div id="panel-3" class="panel">
 <div class="post">
 <h2>TITLE HEADING</h2>
 <p>
 Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
 survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
 publishing software like Aldus PageMaker including versions of Lorem Ipsum.


 </p>
 <div>
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 </div>
 </div>
 </div>

 <button id="accordion-4" class="accordion">Project 4</button>
 <div id="panel-4" class="panel">
 <div class="post">
 <h2>TITLE HEADING</h2>
 <p>
 Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
 survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
 publishing software like Aldus PageMaker including versions of Lorem Ipsum.


 </p>
 <div>
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 </div>
 </div>
 </div>

 <button id="accordion-5" class="accordion">Project 5</button>
 <div id="panel-5" class="panel">
 <div class="post">
 <h2>TITLE HEADING</h2>
 <p>
 Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has
 survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop
 publishing software like Aldus PageMaker including versions of Lorem Ipsum.


 </p>
 <div>
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 <img src="images/placeholder.jpg" class="img-responsive">
 </div>
 </div>
 </div>
</div>