style.css

html, body {
    height: 100%;
    overflow-y: hidden;
    /* Hide vertical scrollbar */
    overflow-x: hidden;
    /* Hide horizontal scrollbar */
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
}

body {
    background: #fef0e3;
    background-image: -webkit-gradient( linear, left bottom, left top, color-stop(1, #f8c0c3), color-stop(0.75, #fcd7cf), color-stop(0.55, #fef0e3), color-stop(0, #fef0e3));
    background-image: linear-gradient(to top, #fef0e3 0% #fef0e3 55%, #fcd7cf 75%, #f8c0c3 100%);
}

canvas {
    display: block;
    vertical-align: bottom;
}

.noSelect {
    -webkit-user-select: none;
    -khtml-user-select: none;
    -moz-user-select: none;
    -o-user-select: none;
    user-select: none;
  }
  

#particles-js {
    width: 100%;
    height: 100%;
    background-image: url('');
    background-size: cover;
    background-position: 50% 50%;
    background-repeat: no-repeat;
}

#block {
    height: 150%;
    width: 150%;
    background-color: #090a17;
    margin-top: 1000px;
    filter: contrast(89%) brightness(237%) blur(0.125rem);
}

#block2 {
    height: 150%;
    width: 150%;
    background-color: #090a17;
    margin-top: 900px;
    filter: contrast(88%) brightness(245%) blur(0.025rem);
}

.scene {
    margin: 0;
    padding: 0;
    bottom: 12.5%;
    left: -12.5%;
    padding-top: 50px;
    position: fixed;
    right: 0;
    top: 0;
    z-index: -1;
}

.scene button {
    left: 10%;
    top: 260px;
    width: 80%;
    position: absolute;
}

.fill {
    bottom: 5%;
    left: 5%;
    position: absolute;
    right: 5%;
    top: 5%;
}

.expand-width {
    width: 100%;
}

.border {
    border: 2px dashed #00ffaa;
}

.aspect {
    opacity: 0.2;
}

.layerElement {
    size: 150%;
    display: block;
    margin-left: auto;
    margin-right: auto;
    background-clip: padding-box;
}

@-webkit-keyframes animateCloud {
    0% {
        margin-left: -1000px;
    }
    100% {
        margin-left: 100%;
    }
}

@-moz-keyframes animateCloud {
    0% {
        margin-left: -1000px;
    }
    100% {
        margin-left: 100%;
    }
}

@keyframes animateCloud {
    0% {
        margin-left: -1000px;
    }
    100% {
        margin-left: 100%;
    }
}

#clouds {
    filter: blur(0.25rem);
    -webkit-animation: animateCloud 295s linear infinite;
    -moz-animation: animateCloud 295s linear infinite;
    animation: animateCloud 295s linear infinite;
}

#mountains {
    width: 2880px ;
    height: 1080px;
    filter: blur(0.125rem);
}

#mountainMiddle {
    width: 2880px ;
    height: 1080px;
    filter: blur(0.05rem);
}

#hills1 {
    width: 2880px ;
    height: 1080px;
    filter: blur(0.025rem);
}

#hills2 {
    width: 2880px ;
    height: 1080px;
    filter: blur(0.05rem);
}

#hills3 {
    width: 2880px ;
    height: 1080px;
    filter: blur(0.05rem);
}

#heroHill {
    width: 2880px ;
    height: 1080px;
}

#smallBird {
    filter: contrast(25%) brightness(85%) blur(0.125rem);
    transform: translateY(60vw) scale(0.55);
}