十字エフェクト

by ethertank

HTML

<a class="effect_target" href="http://placekitten.com/g/200/300">
    <img src="http://placekitten.com/g/200/300" />
    <span class="effect"></span>
</a>

CSS

.effect_target {
    position: relative;
    display: inline-block;
}

.effect_target > .effect {
    position: absolute;
    display: block;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%; 
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-image:
        -webkit-linear-gradient(
          top,
          rgba(255,255,0,0.3),
          rgba(255,255,0,0.3)
        ),
        -webkit-linear-gradient(
          top,
          rgba(0,0,0,0.3),
          rgba(0,0,0,0.3)
        ),
        -webkit-linear-gradient(
          top,
          rgba(0,0,0,0.3),
          rgba(0,0,0,0.3)
        ),
        -webkit-linear-gradient(
          top,
          rgba(0,255,255,0.3),
          rgba(0,255,255,0.3)
        );
    background-position:
        left top, right top,
        left bottom, right bottom;
    -webkit-transition: background-size 0.5s ease-in-out;
}


.effect_target:hover > .effect { background-size: 0 0; }