#floating-button{position:fixed;bottom:10px;right:10px}#floating-button img{height:auto;display:none}#floating-button img.desktop{width:190px;height:103px;display:block}@media screen and (max-width:768px){#floating-button img.desktop{display:none}#floating-button img.mobile{width:49px;height:46px;display:block}}