<!DOCTYPE html>
<style>
.full {
width: 50vw;
height: 10vh;
margin: 8px;
}
.half {
width: 25vw;
height: 10vh;
overflow: hidden;
margin: 8px;
}
</style>
<div class="full">
<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%">
<rect fill="blue" x="0" width="100%" height="100%" rx="10" />
</svg>
</div>
<div class="half">
<svg xmlns="http://www.w3.org/2000/svg" width="200%" height="200%">
<rect fill="blue" x="0" width="100%" height="100%" rx="10" />
</svg>
</div>
<div class="full">
<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%">
<rect fill="blue" x="0" width="100%" height="100%" rx="10" />
</svg>
</div>
<div class="full">
<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%">
<rect fill="blue" x="0" width="100%" height="100%" rx="10" />
</svg>
</div>
<div class="full">
<svg xmlns="http://www.w3.org/2000/svg" width="100%" height="100%">
<rect fill="blue" x="0" width="100%" height="100%" rx="10" />
</svg>
</div>