CSS3 transition fadein with display:none

Question

I\'ve got some element I want to fade with CSS3. It can be simply done by 2 classes with opacity: 0 and opacity: 1, b

Answer 1

You can do it by 100% CSS pure code.

.menu > li > ul{
    display: none;
}
.menu > li:hover > ul {
    display: block;
    animation-duration: 0.5s;
    animation-name: fadeInFromNone;
    animation-fill-mode: forwards;
    -webkit-animation-duration: 0.5s;
    -webkit-animation-name: fadeInFromNone;
    -webkit-animation-fill-mode: forwards;
    -ms-animation-duration: 0.5s;
    -ms-animation-name: fadeInFromNoneIE;
    -ms-animation-fill-mode: forwards;
}
@-webkit-keyframes fadeInFromNone {
    0% {
        opacity: 0
    }

    1% {
        opacity: 0
    }

    100% {
        opacity: 1
    }
}

@keyframes fadeInFromNoneIE {
    0% {
        opacity: 0
    }

    1% {
        opacity: 0
    }

    100% {
        opacity: 1
    }
}

@keyframes fadeInFromNone {
    0% {
        opacity: 0
    }

    1% {
        opacity: 0
    }

    100% {
        opacity: 1
    }
}