force song-wrapper to have maximum expandable width and horizontally center
force song-wrapper to have maximum expandable width and horizontally center

phil-wc/phil-wc.github.io,sancowinx/phil-wc.github.io,sancowinx/phil-wc.github.io,sancowinx/phil-wc.github.io,phil-wc/phil-wc.github.io,phil-wc/phil-wc.github.io