語法相關

.item1:hover item2{
opacity: 1;
-webkit-transform: translate3d(0, 0, 0);
transform: translate3d(0, 0, 0);
}

.item2{
opacity: 0;
-webkit-transform: translate3d(0, 10px, 0);
transform: translate3d(0, 10px, 0);
transition: opacity 0.2s ease, -webkit-transform 0.2s ease;
transition: opacity 0.2s ease, transform 0.2s ease;
transition: opacity 0.2s ease, transform 0.2s ease, -webkit-transform 0.2s ease;
}