el-fore-color);background: var(--collapse-label-back-color);border: 0.0714285714rem solid var(--collapse-selected-border-color);padding: calc(1.25 * var(--universal-padding)); }.collapse > label:hover, .collapse > label:focus {background: var(--collapse-label-hover-back-color); }.collapse > label + div {flex-basis: auto;height: 1px;width: 1px;margin: -1px;overflow: hidden;position: absolute;clip: rect(0 0 0 0);-webkit-clip-path: inset(100%);clip-path: inset(100%);transition: max-height 0.3s;max-height: 1px;