body {
    background: #333333;
    padding: 0;
    margin: 0;
    position: relative;
    height: 100vh;
    overflow: hidden;
}

h2 {
    position: absolute;
    top: 50%;
    left: 50%;
    text-align: center;
    color: #000;
    width: 400px;
    margin: 120px 0 0 -200px;
    font-size: 35px;
}

.logo {
    position: absolute;
    width: 200px;
    top: 50%;
    left: 50%;
    margin: -150px 0 0 -100px;
    margin-top: -100px;
    -webkit-animation: bounce 1s .2s infinite alternate;
    -moz-animation: bounce 1s .2s infinite alternate;

    img {
        position: absolute;
        left: 0;
        top: 0;
        width: 100%;

        &.img1 {}

        &.img2 {
            opacity: 0;
            animation: glass 1s 0s linear both;
        }

        &.img3 {
            opacity: 0;
            animation: smoke 1.2s 0s linear both;
        }

        &.img4 {

            opacity: 0;
            animation: neck 1.5s 0s linear both;
        }

        &.shine {
            z-index: -1;
            width: 400px;
            margin: -100px 0 0 -100px;
            opacity: 0.5;
            animation: zhuan 5s 0s infinite linear;
        }
    }
}

@-webkit-keyframes zhuan {
    0% {

        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@keyframes zhuan {
    0% {
        -webkit-transform: rotate(0deg);
        transform: rotate(0deg);
    }

    100% {
        -webkit-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@-webkit-keyframes neck {
    0% {
        opacity: 0;
        top: 30px;
    }

    100% {
        opacity: 1;
        top: 0;
    }
}

@keyframes neck {
    0% {
        opacity: 0;
        top: 30px;
    }

    100% {
        opacity: 1;
        top: 0;
    }
}

@-webkit-keyframes smoke {
    0% {
        opacity: 0;
        top: 20px;
    }

    100% {
        opacity: 1;
        top: 0;
    }
}

@keyframes smoke {
    0% {
        opacity: 0;
        top: 20px;
        left: 20px;
    }

    100% {
        opacity: 1;
        top: 0;
        left: 0px;
    }
}

@-webkit-keyframes glass {
    0% {
        opacity: 0;
        top: -20px;
    }

    100% {
        opacity: 1;
        top: 0;
    }
}

@keyframes glass {
    0% {
        opacity: 0;
        top: -20px;
    }

    100% {
        opacity: 1;
        top: 0;
    }
}

@-webkit-keyframes bounce {
    0% {
        -webkit-transform: translateY(0)
    }

    100% {
        -webkit-transform: translateY(-10px)
    }
}

@-moz-keyframes bounce {
    0% {
        -moz-transform: translateY(0)
    }

    100% {
        -moz-transform: translateY(-10px)
    }
}