<div class="container"><!-- Top-left corner --><div class="container__corner container__corner--tl">...</div><!-- Top-right corner --><div class="container__corner container__corner--tr">...</div><!-- Bottom-right corner --><div class="container__corner container__corner--br">...</div><!-- Bottom-left corner --><div class="container__corner container__corner--bl">...</div></div>
.container {position: relative;}.container__corner {position: absolute;}.container__corner--tl {left: 0;top: 0;}.container__corner--tr {top: 0;right: 0;}.container__corner--br {bottom: 0;right: 0;}.container__corner--bl {bottom: 0;left: 0;}