html,
body {
    padding: 0;
    margin: 0;
    height: 100%;
}

.bg {
    background: #000 url(images/03.png) no-repeat center center;
    background-size: 100%;
    width: 100%;
    height: 100vh;
    display: block;
    overflow: hidden;
}

.fuse{
    position: absolute;
    top: 28%;
    left: 30%;
    background:url(images/fuse.png) no-repeat;
    background-size: cover;
    -webkit-transform:scale(.35);
        -ms-transform:scale(.35);
            transform:scale(.35);
    width:200px;
    height:200px;
    -webkit-animation: fuse .2s ease infinite both;
            animation: fuse .2s ease infinite both;
}

@-webkit-keyframes fuse {
    0%, 19.9%{ 
        background-position:0 0;
    }
    20%, 39.9%{
        background-position:0 -200px;
    }
    40%, 59.9%{
        background-position:0 -400px;
    }
    60%, 79.9%{
        background-position:0 -600px;
    }
    80%, 100% {
        background-position:0 -800px;
    }
}

@keyframes fuse {
    0%, 19.9%{ 
        background-position:0 0;
    }
    20%, 39.9%{
        background-position:0 -200px;
    }
    40%, 59.9%{
        background-position:0 -400px;
    }
    60%, 79.9%{
        background-position:0 -600px;
    }
    80%, 100% {
        background-position:0 -800px;
    }
}

@media screen and (max-width: 781px) {
    .fuse{
    top: 15%;
    left: 15%;
    transform: scale(.3);
    }
}