I think I have posted this in the correct place so here goes. I am not one who likes big borders from YouTube around videos especially when in the phone size view, that one in particular leaves massive borders above and below the video. So I had a little tinker with these by adding some css into the profiles.
I have only tried this for YouTube so far but looks much better. If you resize the browser you should see the changes. Oh I also changed my profile image size as it was to large for me.
Here is a link to my video page
http://1940snetwork.com/founder/youtube
Here is the css I used, this is my first play around with changing any Jamroom items and would be better to probably add some classes to make it easier to target which I will do at some point.
/* Johns YouTube Code For Profiles */
@media only screen and ( max-width:300px){
iframe#ytplayer{width:auto!important;height:auto!important;display:flex;margin:auto}}
@media only screen and ( min-width:300px ) and (max-width:481px){
iframe#ytplayer{width:100%!important;height:198px!important;display:flex;margin:auto}}
@media only screen and ( min-width:481px ) and (max-width:587px){
iframe#ytplayer{width:440px!important;height:249px!important;display:flex;margin:10px auto; }}
@media only screen and ( min-width:587px ) and (max-width:767px ){
iframe#ytplayer{width:560px!important;height:315px!important;display:flex;margin:10px auto; }}
@media only screen and ( min-width:767px ) and ( max-width:941px){
iframe#ytplayer{width:520px!important;height:293px!important;display:flex;margin:10px auto; }}
@media only screen and ( min-width:941px ) and ( max-width:1155px){
iframe#ytplayer{width:640px!important;height:360px!important;display:flex;margin:10px auto; }}
@media only screen and ( min-width:1155px){
iframe#ytplayer{ width:740px!important;height:416px!important;display:flex;margin:10px auto; }}
@media only screen and ( min-width:481px ){
iframe#ytplayer{ margin:10px auto;box-shadow:2px 2px 7px rgba(0,0,0,0.9);padding:4px;border:2px solid }}
This is on the slateskin by the way with no other adjustments to it's standard padding etc.
** This was updated because some other elements like the comments entry was also iframed so added the #ytplayer after iframe so it will only target the YouTube player and leave the other iframed items alone ***
updated by @john-bizley: 01/03/15 03:37:56PM