:root {
    --cloudspeedA: 50s;
    --cloudspeedB: calc(var(--cloudspeedA) + 1.5s);
    --cloudspeedC: calc(var(--cloudspeedA) + 4.5s);
}


body {
    overflow: hidden;
}

#canvas {
    display: none;
}

.blacktheme #canvas {
    display: block;
}

.blacktheme .cloudWrapper01 {
    display: none;
}

.cloudWrapper01 {
    position:absolute;
    z-index: 0;
    bottom: -10vh;
    filter: drop-shadow(0vh -3vh 0 rgba(var(--backcolor-rgb), 1));
}

.cloud {
    width: 200px;
    height: 200px;
    display: inline-block;
    margin: 0;
    border-radius: 50%;
    position: absolute;
    bottom: 0;
    background-color: var(--maincolor15);
    /* z-index: 1; */
}

.blacktheme .cloud.coud1,
.blacktheme .cloud.coud2,
.blacktheme .cloud.coud3,
.blacktheme .cloud.coud4,
.blacktheme .cloud.coud5,
.blacktheme .cloud.coud6 {
    will-change: auto;
    -webkit-animation: none;
    animation: none;
}

.cloud.coud1 {
    width: 15vw;
    height: 15vw;
    bottom: 6.1vw;
    border-radius: 77%;
    left: -3.7vw;
    -webkit-animation: cloud1 var(--cloudspeedA) infinite alternate;
    animation: cloud1 var(--cloudspeedA) infinite alternate;
    z-index: 6;
}

.cloud.coud2 {
    width: 38vw;
    height: 38vw;
    left: -3.3vw;
    bottom: -20vw;
    -webkit-animation: cloud2 var(--cloudspeedA) infinite alternate;
    animation: cloud2 var(--cloudspeedA) infinite alternate;
    z-index: 5;
}

.cloud.coud3 {
    left: 28vw;
    width: 36vw;
    height: 31vw;
    bottom: -17vw;
    -webkit-animation: cloud3 var(--cloudspeedB) infinite alternate;
    animation: cloud3 var(--cloudspeedB) infinite alternate;
    z-index: 4;
}

.cloud.coud4 {
    width: 15vw;
    height: 17vw;
    bottom: -6vw;
    left: 61vw;
    border-radius: 59%;
    -webkit-animation: cloud4 var(--cloudspeedB) infinite alternate;
    animation: cloud4 var(--cloudspeedB) infinite alternate;
    z-index: 3;
}

.cloud.coud5 {
    width: 24vw;
    height: 42vw;
    left: 70vw;
    bottom: -22vw;
    -webkit-animation: cloud5 var(--cloudspeedC) infinite alternate;
    animation: cloud5 var(--cloudspeedC) infinite alternate;
    z-index: 2;
}

.cloud.coud6 {
    width: 45vw;
    height: 46vw;
    left: 84vw;
    bottom: -24vw;
    -webkit-animation: cloud6 var(--cloudspeedC) infinite alternate;
    animation: cloud6 var(--cloudspeedC) infinite alternate;
    z-index: 1;
}

@keyframes cloud1 {
    0% {
        width: 15vw;
        height: 15vw;
        bottom: 6.1vw;
        border-radius: 77%;
        left: -3.7vw;
    }

    50% {
        width: 20vw;
        height: 22vw;
        bottom: 7.1vw;
        border-radius: 77%;
        left: -2.8vw;
    }

    100% {
        width: 17vw;
        height: 19vw;
        bottom: 7vw;
        border-radius: 77%;
        left: -8.8vw;
    }
}

@-webkit-keyframes cloud1 {
    0% {
        width: 15vw;
        height: 15vw;
        bottom: 6.1vw;
        border-radius: 77%;
        left: -3.7vw;
    }

    50% {
        width: 20vw;
        height: 22vw;
        bottom: 7vw;
        border-radius: 77%;
        left: -2.8vw;
    }

    100% {
        width: 17vw;
        height: 19vw;
        bottom: 7.1vw;
        border-radius: 77%;
        left: -8.8vw;
    }
}

@keyframes cloud2 {
    0% {
        width: 38vw;
        height: 38vw;
        left: -3.3vw;
        bottom: -20vw;
    }

    50% {
        width: 47vw;
        height: 40vw;
        left: -1.9vw;
        bottom: -17.9vw;
    }

    100% {
        width: 43vw;
        height: 41vw;
        left: -3.3vw;
        bottom: -20vw;
    }
}

@-webkit-keyframes cloud2 {
    0% {
        width: 38vw;
        height: 38vw;
        left: -3.3vw;
        bottom: -20vw;
    }

    50% {
        width: 47vw;
        height: 40vw;
        left: -1.9vw;
        bottom: -17.9vw;
    }

    100% {
        width: 43vw;
        height: 41vw;
        left: -3.3vw;
        bottom: -20vw;
    }
}

@keyframes cloud3 {
    0% {
        left: 28vw;
        width: 38vw;
        height: 34vw;
        bottom: -14vw;
    }

    50% {
        left: 30vw;
        width: 40vw;
        height: 32vw;
        bottom: -17vw;
    }

    100% {
        left: 29vw;
        width: 39vw;
        height: 31vw;
        bottom: -17vw;
    }
}

@-webkit-keyframes cloud3 {
    0% {
        left: 28vw;
        width: 38vw;
        height: 34vw;
        bottom: -14vw;
    }

    50% {
        left: 30vw;
        width: 40vw;
        height: 32vw;
        bottom: -17vw;
    }

    100% {
        left: 29vw;
        width: 39vw;
        height: 31vw;
        bottom: -17vw;
        ;
    }
}

@keyframes cloud4 {
    0% {
        width: 22vw;
        height: 19vw;
        bottom: -2vw;
        left: 59vw;
    }

    50% {
        width: 24vw;
        height: 18vw;
        bottom: -0vw;
        left: 61vw;
    }

    100% {
        width: 15vw;
        height: 17vw;
        bottom: -6vw;
        left: 61vw;
    }
}

@-webkit-keyframes cloud4 {
    0% {
        width: 22vw;
        height: 19vw;
        bottom: -2vw;
        left: 59vw;
    }

    50% {
        width: 24vw;
        height: 18vw;
        bottom: -0vw;
        left: 61vw;
    }

    100% {
        width: 15vw;
        height: 17vw;
        bottom: -6vw;
        left: 61vw;
    }
}

@keyframes cloud5 {
    0% {
        width: 24vw;
        height: 42vw;
        left: 70vw;
        bottom: -22vw;
    }

    50% {
        width: 30vw;
        height: 46vw;
        left: 66vw;
        bottom: -21vw;
        transform: skewY(22deg);
    }

    100% {
        width: 30vw;
        height: 45vw;
        left: 66vw;
        bottom: -23vw;
        transform: skewY(12deg);
    }
}

@-webkit-keyframes cloud5 {
    0% {
        width: 24vw;
        height: 42vw;
        left: 70vw;
        bottom: -22vw;
    }

    50% {
        width: 30vw;
        height: 46vw;
        left: 66vw;
        bottom: -21vw;
        -webkit-transform: skewY(22deg);
    }

    100% {
        width: 30vw;
        height: 45vw;
        left: 66vw;
        bottom: -23vw;
        -webkit-transform: skewY(12deg);
    }
}

@keyframes cloud6 {
    0% {
        width: 45vw;
        height: 46vw;
        left: 84vw;
        bottom: -24vw;
    }

    50% {
        width: 51vw;
        height: 50vw;
        left: 84vw;
        bottom: -24vw;
        transform: skewY(32deg);
    }

    100% {
        width: 34vw;
        height: 50vw;
        left: 82vw;
        bottom: -24vw;
        transform: skewY(12deg);
    }
}

@-webkit-keyframes cloud6 {
    0% {
        width: 45vw;
        height: 46vw;
        left: 84vw;
        bottom: -24vw;
    }

    50% {
        width: 51vw;
        height: 50vw;
        left: 84vw;
        bottom: -24vw;
        -webkit-transform: skewY(32deg);
    }

    100% {
        width: 34vw;
        height: 50vw;
        left: 82vw;
        bottom: -24vw;
        -webkit-transform: skewY(12deg);
    }
}