.woofzpl-rotating-plane {
    width: 40px;
    height: 40px;
    background-color: #cccccc;
    margin: 40px auto;
    -webkit-animation: woofzpl-rotatePlane 1.2s infinite ease-in-out;
    animation: woofzpl-rotatePlane 1.2s infinite ease-in-out;
}
@-webkit-keyframes woofzpl-rotatePlane {
    0% {
        -webkit-transform: perspective(120px) rotateX(0deg) rotateY(0deg);
        transform: perspective(120px) rotateX(0deg) rotateY(0deg);
    }
    50% {
        -webkit-transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
        transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
    }
    100% {
        -webkit-transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
        transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
    }
}
@keyframes woofzpl-rotatePlane {
    0% {
        -webkit-transform: perspective(120px) rotateX(0deg) rotateY(0deg);
        transform: perspective(120px) rotateX(0deg) rotateY(0deg);
    }
    50% {
        -webkit-transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
        transform: perspective(120px) rotateX(-180.1deg) rotateY(0deg);
    }
    100% {
        -webkit-transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
        transform: perspective(120px) rotateX(-180deg) rotateY(-179.9deg);
    }
}