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:요즘에는 일부 CSS 요소의 속성 앞에 "-moz"및 "-webkit"과 같은 접두사를 추가하는 것이 좋습니다. 이 다음 문에서 exemple 들어
animation: closing 3s steps(90) forwards;
-webkit-animation: closing 3s steps(90) forwards;
-moz-animation: closing 3s steps(90) forwards;
background: -webkit-linear-gradient(top, rgba(255,0,0,0.5), rgba(255,255,0,0.5));
background: -o-linear-gradient(top, rgba(255,0,0,0.5), rgba(255,255,0,0.5));
background: -moz-linear-gradient(top, rgba(255,0,0,0.5), rgba(255,255,0,0.5));
background: linear-gradient(to top, rgba(255,0,0,0.65), rgba(255,255,0,0.65));
체크 아웃 caniuse.com – jhpratt