In localhost, this very simple code has no issue but it doesn't work on codePen? (the color background should change when the button is clicked)
https://codepen.io/jmercier/pen/mdvzJEV
The hover states of my button doesn't work on codePen and the javaascript is ignored.
Why?
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@100;200;300;400;500;600;700;800;900&display=swap');
:root {
--bg-color: #F5F5F5;
--text-color: #000;
--bg-hover: green;
--text-hover: white;
}
* {
margin: 0;
padding: 0;
box-sizing: border-box
}
body {
transition: background-color 2s;
background: var(--bg-color);
color: var(--text-color);
font-family: 'Inter', sans-serif;
}
#container {
display: flex;
flex-direction: column;
width: 100%;
height: 100vh;
justify-content: center;
align-items: center;
}
.title {
font-weight: 400;
font-size: 1.5rem;
}
.sstitle {
font-weight: 300;
font-size: 0.825rem;
letter-spacing: .5rem;
}
.btn {
border: none;
padding: 0.5rem 1rem;
margin-top: 1rem;
background: var(--text-color);
color: var(--bg-color);
}
.btn:hover {
background: var(--bg-hover);
color: var(--text-hover);
cursor: pointer;
}
</style>
</head>
<body>
<div id="container">
<p class="title">Hello World</p>
<p class="sstitle">Welcome</p>
<button class="btn" id="btn">Changing Color</button>
</div>
<script>
let state = 0;
let btn = document.getElementById("btn");
btn.addEventListener("click", toogleLight)
function toogleLight() {
if(state===0){
document.documentElement.style.setProperty("--bg-color","black");
document.documentElement.style.setProperty("--text-color","#F5F5F5");
state = 1;
} else{
document.documentElement.style.setProperty("--bg-color","#F5F5F5");
document.documentElement.style.setProperty("--text-color","black");
state = 0;
}
}
</script>
</body>
</html>the color background should change when the button is clicked