.bluebox::before{content:'';position:absolute;bottom:-43px;left:-43px;width:133px;height:147px;background:url('https://efemko.de/wp-content/uploads/2025/03/corner_small.svg') no-repeat bottom left}@media screen and (max-width:782px){.bluebox::before{bottom:-23px;left:-23px}}.bluebox{overflow:visible}