.panel-area .bb-comment .fold-comment { position: sticky; bottom: 0; height: 40px; width: calc(100% + 20px); font-size: 14px; transform: translateX(-10px); display: flex; align-items: center; justify-content: center; background-color: white; color: #99a2aa; cursor: pointer; transition: all .2s ease-out; z-index: 1000; } .panel-area .bb-comment .fold-comment:hover { color: black; } body.dark .panel-area .bb-comment .fold-comment { background-color: #444; color: #eee; } body.dark .panel-area .bb-comment .fold-comment:hover { color: var(--theme-color); }