<!doctype html>
<style>
body {
margin: 0;
height: 100vh;
}
div {
width: calc(50vw + 10%);
height: calc(50vh + 10%);
background-color: green;
}
</style>
<div>
</div>
<!doctype html>
<style>
body {
margin: 0;
height: 100vh;
}
div {
width: calc(50vw + 10%);
height: calc(50vh + 10%);
background-color: green;
}
</style>
<div>
</div>