body {
    /*background: url("bg.png");*/
    background: url("bgg.png") no-repeat center fixed;
    background-size: cover;
    font-family: 'Comfortaa', cursive;
}

h1 {
    color: #ffffffdb;
    font-size: 36px;
    margin-top: 0;
}

img {
    width: 75%;
}

.main {
    position: absolute;
    left: 50%;
    top: 20%;
}
.content {
    position: relative;
    left: -50%;
    top: -50%;
    text-align: center;
}

#imgtourne {
    border-radius: 100px;
    margin-left: 0;
    -webkit-animation:spin 7s linear infinite;
    -moz-animation:spin 7s linear infinite;
    animation:spin 7s linear infinite;
    filter: invert(1);
}

@-moz-keyframes spin {
    100% {
        -moz-transform: rotate(360deg);
    }
}

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

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