ºÝºÝߣ

<style>.ig-b- { display: inline-block; } .ig-b- img { visibility: hidden; } .ig-b-:hover { background-position: 0 -60px; } .ig-b-:active { background-position: 0 -120px; } .ig-b-48 { width: 48px; height: 48px; background: