purecss-components/dist/bundles/collapse.css

Pure.CSS Components is a responsive lib of CSS Only components built to work with Pure.CSS

.pcssc-collapse .collapse-toggle:checked+.collapse-content{display:block}.pcssc-collapse.collapse-toggle-button .collapse-toggle:checked~.collapse-content{display:block}.pcssc-collapse.collapse-toggle-button .collapse-toggle:checked+.collapse-button .collapse-button-label:first-child{display:none}.pcssc-collapse.collapse-toggle-button .collapse-toggle:checked+.collapse-button .collapse-button-label:last-child{display:inline}