css background transparent All In One

css background transparent All In One

opacity

        ul {
            max-height: 100px;
            /* max-height: 187px; */
            overflow-y: auto;
            position: relative;
            li:first-of-type {
                top: -1px;
                position: sticky;
                z-index: 666;
                opacity: 0;
                background: transparent;
            }
      }

refs

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