animation visible in live preview brackets but not in ANY browser - browser

Question

i made a loading bar for my website. On the live preview with brackets, when I scroll down to my bar, the animation become visible. When I open my html page with a browser (chrome or edge), The loading bar animation does not appear... Although I think I used the right prefixes. Below you can see my code:
**CSS**
.laden100 {
animation-name: laden100;
-webkit-animation-name: laden100;
animation-duration: 4s;
-webkit-animation-duration: 4s;
visibility: visible;
width: 100%;
height: 20px;
background-image: linear-gradient(to bottom, #308355, #308355, #308355, #00cc66);
background-image: -webkit-linear-gradient(to bottom, #308355, #308355, #308355, #00cc66);
box-shadow: 5px 5px 5px grey;
border-radius: 5px 5px 5px 5px;
position: relative;
margin-top: 20px;
margin-left: 20px;
margin-right: 20px;
}
#keyframes laden100 {
0% {
opacity: 0;
width: 0%;
}
100% {
opacity: 1;
width: 100%;
}
}
#-webkit-keyframes laden100 {
0% {
opacity: 0;
width: 0%;
}
100% {
opacity: 1;
width: 50%;
}
}
**HTML**
<div class="container wit mt-5">
<h1 id="skills">Skills</h1>
<p style="color:#308355">Below you can see my skills I have. This learning process is still ongoing. I hope to achieve at least 80% for each coding language.</p>
<br>
<div class="container">
<div class="row">
<div class="vak">HTML</div>
<div class="laadbalk100"></div>
<div class="score100">%</div>
</div>
<br>
</div>
</div>
**JAVASCRIPT**
<!----------------------- only load the load bar on scroll-------------->
<script>
$(document).ready(function() {
// Add smooth scrolling to all links in navbar + footer link
$(".navbar a, footer a[href='#myPage']").on('click', function(event) {
// Make sure this.hash has a value before overriding default behavior
if (this.hash !== "") {
// Prevent default anchor click behavior
event.preventDefault();
// Store hash
var hash = this.hash;
// Using jQuery's animate() method to add smooth page scroll
// The optional number (900) specifies the number of milliseconds it takes to scroll to the specified area
$('html, body').animate({
scrollTop: $(hash).offset().top
}, 900, function() {
// Add hash (#) to URL when done scrolling (default click behavior)
window.location.hash = hash;
});
} // End if
});
$(window).scroll(function() {
$(".laadbalk100").each(function() {
var pos = $(this).offset().top;
var winTop = $(window).scrollTop();
if (pos < winTop + 600) {
$(this).addClass("laden100");
}
});
});
})
</script>
I used prefixes because I think it has something to do with browser support. According to me, Brackets uses plugins to add the right prefixes.

Answer 1

OK sry Guys,
I found the answer to my own question... :D.
Because browsers have different screen resolutions, I had to increase wintop +600 to wintop +1000. See the correction below:
$(window).scroll(function() {
$(".laadbalk100").each(function() {
var pos = $(this).offset().top;
var winTop = $(window).scrollTop();
if (pos < winTop + 1000) {
$(this).addClass("laden100");
}
});
});