Fluid Userstyle for Yammer

yammer.css

div.page-content.two-column-layout,
.column-two-left,
.yj-main-content{
  margin-left: auto !important;
  margin-right: auto !important;
  width: 500px !important;
}
 
#column-two {
    width: 100% !important;
}
 
body,
div.page-content.two-column-layout,
div.page-content.three-column-layout {
  background: none !important;
  width: 100% !important;
}
 
#main-column {
  margin: 0 20px !important;
}
 
body #header-navigation,
body #header-navigation #header-left,
body #header-navigation #header-right {
    margin: 0 !important;
    width: auto !important;
}
 
#masthead-container,
#column-one,
#column-three,
.yj-selector-right-sidebar,
.yj-chatmanager,
#footer {
  display: none !important;
}