col-anim
.collapsible-block-content{ opacity:0; max-height:0; animation:change 3s linear both; } @keyframes change { 20% { opacity:0.7; max-height: 20rem; } 100% { opacity:1; max-height:99999rem; } }
ページリビジョン: 23, 最終更新: 03 May 2023 06:27