Need to hide/remove volume bar in WordPress Default Player to give more room to progress bar

After a few hours… Here is the solution to my own question

.mejs-horizontal-volume-slider { display: none !important; }
.mejs-controls div.mejs-time-rail { width: 70px !important; }
.mejs-time-total { width: 60px !important; }

Now my audio player is exactly like the example provided. I hope this helps somebody else.