<!DOCTYPE html>
<style>
body {
    margin: 0;
}
div {
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100px;
    height: 100px;
    background-color: green;
}
::-webkit-scrollbar {
    width: 0px;
    height: 0px;
}
</style>
<div></div>