.bslib-sidebar-layout>.sidebar>.sidebar-content { padding: 1.5rem; } .bslib-sidebar-layout>.main { padding: 1.5rem; } .shiny-notification { position: fixed; top: calc(0%); left: calc(50% - 100px); padding: 10px 10px; width: 200px; background-color: rgba(182, 186, 191, 1); }