Ah yeah I tested on firefox and it was fine but on chrome it was as you said
here's the fixed (i think)

<div align="right"><div class="fixed-bottom"><table style="width: 0%;"><tbody><tr><td style="width: 100%; text-align: center; background-color: transparent; border-color: transparent; border-style: double;"><span style="color: rgb(128, 0, 0);">Song Name<br><div class="card bg" style="background: rgb(128, 0, 0);width:270px;height:40px;"><audio controls="" style="opacity:0.20;width:270px;height:40px;"><source src="MP3LINK"></audio></div></span></td></tr></tbody></table></div></div>