How can I make my .sidebar flex element stay sticky while scrolling if using position: sticky; top: 0; doesn't seem to work?
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
height: 100vh;
}
header {
width: 100%;
height: 100px;
background-color: blue;
opacity: 0.5;
position: sticky;
z-index: 100;
top: 0;
}
.container {
display: flex;
gap: 2rem;
position: relative;
}
.sidebar {
position: sticky;
top: 0;
}
.main {
display: flex;
gap: 2rem;
flex-direction: column;
}
.main div {
width: 300px;
aspect-ratio: 1 / 1;
background-color: red;
}<div class="root">
<header></header>
<div class="container">
<div class="sidebar">
<p>Sidebar</p>
<button>Upload image</button>
</div>
<div class="main">
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</div>
</div>
</div>