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HTML

</div>
    <div class="loading-container">
            
    </div>
</body>
</html>

CSS

body {
            margin: 0;
            padding: 0;
            height: 100vh;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            justify-content: center;
            align-items: center;
            font-family: Arial, sans-serif;
        }

.container {
            display: flex;
            flex-direction: column;
            align-items: center;
            transform-style: preserve-3d;
            transform: rotateY(1deg);
            animation: rotateH 5s linear forwards;
            animation-delay: 3s;
        }
        @keyframes rotateH{
            0%{transform:rotateY(1deg);}
            100%{transform: rotateY(90deg);}
        }

.cylinder {
            position: relative;
            width: 200px;
            height: 10px;
            transform-style: preserve-3d;
            transform: rotateX(90deg) rotateY(-90deg);
        }

.cylinderNano{
           position: absolute;
           width: 30px;
           height: 1.5px;
           transform-style: preserve-3d;
           transform: rotateZ(90deg)  translateZ(45px);
        }
     
        .cylinder-nano-top{
            border: 1px solid #f8f9fa;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%);
            position: absolute;
            width: 120px;
            height: 120px;
            border-radius: 50%;
            top: -30px;
            left: 0;
            transform: rotateX(90deg);
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.1);
        } 
        .cylinder-nano-bottom{
            border: 40px solid #f1f3f4;
            background: rgb(0, 0, 0);
            position: absolute;
            width: 40px;
            height:40px;
            border-radius: 50%;
            top: -30px;
            left: 0;
            transform: rotateX(90deg);
            box-shadow: inset 0 2px 4px rgba(0,0,0,0.15);
        } 
        .other-side{
            top:-56px;
        }
        .bottom-side{
            top:-56px;
        }

.cylinder-nano-segment{
            position: absolute;
            width: 2.5px;
            height: 30px;
            left: 55.5px;
            top: 0;
            transform-origin: 6px 150px;
            background: linear-gradient(180deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%);
            border: 2px solid #f1f3f4;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }
        .cylinder-segment {
            position: absolute;
            width: 12px;
            height: 92px;
            left: 94px;
            top: 1px;
            transform-origin: 6px 150px;
            background: linear-gradient(180deg, #f8f9fa 0%, #e9ecef 50%, #dee2e6 100%);
            border: 3px solid #f1f3f4;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }
       
        .left-ring{
            position: absolute;
            left: -15px;
            top: 0;
            transform-style: preserve-3d;
            transform: rotateZ(-20deg);
        }
        .right-ring{
            position: absolute;
            right: -20px;
            top: 0;
            transform-style: preserve-3d;
            transform: rotateZ(20deg);
        }
  
        .cylinder-segment:nth-child(1) {
            transform: rotateY(0deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(2){
            transform: rotateY(6deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(3){
            transform: rotateY(12deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(4) {
            transform: rotateY(18deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(5) {
            transform: rotateY(24deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(6) {
            transform: rotateY(30deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(7) {
            transform: rotateY(36deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(8) {
            transform: rotateY(42deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(9) {
            transform: rotateY(48deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(10) {
            transform: rotateY(54deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(11) {
            transform: rotateY(60deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(12) {
            transform: rotateY(66deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(13) {
            transform: rotateY(72deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(14) {
            transform: rotateY(78deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(15) {
            transform: rotateY(84deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(16) {
            transform: rotateY(90deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(17) {
            transform: rotateY(96deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(18) {
            transform: rotateY(102deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(19) {
            transform: rotateY(108deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(20) {
            transform: rotateY(114deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(21) {
            transform: rotateY(120deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(22) {
            transform: rotateY(126deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(23) {
            transform: rotateY(132deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(24) {
            transform: rotateY(138deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(25) {
            transform: rotateY(144deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(26) {
            transform: rotateY(150deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(27) {
            transform: rotateY(156deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(28) {
            transform: rotateY(162deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(29) {
            transform: rotateY(168deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(30) {
            transform: rotateY(174deg) translateZ(100px);
        }
        .cylinder-segment:nth-child(31) {
            transform: rotateY(180deg) translateZ(100px);
        }

.cylinder-nano-segment:nth-child(1) {
            transform: rotateY(0deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(2) {
            transform: rotateY(6deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(3) {
            transform: rotateY(12deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(4) {
            transform: rotateY(18deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(5) {
            transform: rotateY(24deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(6) {
            transform: rotateY(30deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(7) {
            transform: rotateY(36deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(8) {
            transform: rotateY(42deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(9) {
            transform: rotateY(48deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(10) {
            transform: rotateY(54deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(11) {
            transform: rotateY(60deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(12) {
            transform: rotateY(66deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(13) {
            transform: rotateY(72deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(14) {
            transform: rotateY(78deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(15) {
            transform: rotateY(84deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(16) {
            transform: rotateY(90deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(17) {
            transform: rotateY(96deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(18) {
            transform: rotateY(102deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(19) {
            transform: rotateY(108deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(20) {
            transform: rotateY(114deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(21) {
            transform: rotateY(120deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(22) {
            transform: rotateY(126deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(23) {
            transform: rotateY(132deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(24) {
            transform: rotateY(138deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(25) {
            transform: rotateY(144deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(26) {
            transform: rotateY(150deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(27) {
            transform: rotateY(156deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(28) {
            transform: rotateY(162deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(29) {
            transform: rotateY(168deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(30) {
            transform: rotateY(174deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(31) {
            transform: rotateY(180deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(32) {
            transform: rotateY(186deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(33) {
            transform: rotateY(192deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(34) {
            transform: rotateY(198deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(35) {
            transform: rotateY(204deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(36) {
            transform: rotateY(210deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(37) {
            transform: rotateY(216deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(38) {
            transform: rotateY(222deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(39) {
            transform: rotateY(228deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(40) {
            transform: rotateY(234deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(41) {
            transform: rotateY(240deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(42) {
            transform: rotateY(246deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(43) {
            transform: rotateY(252deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(44) {
            transform: rotateY(258deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(45) {
            transform: rotateY(264deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(46) {
            transform: rotateY(270deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(47) {
            transform: rotateY(276deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(48) {
            transform: rotateY(282deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(49) {
            transform: rotateY(288deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(50) {
            transform: rotateY(294deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(51) {
            transform: rotateY(300deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(52) {
            transform: rotateY(306deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(53) {
            transform: rotateY(312deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(54) {
            transform: rotateY(318deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(55) {
            transform: rotateY(324deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(56) {
            transform: rotateY(330deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(57) {
            transform: rotateY(336deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(58) {
            transform: rotateY(342deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(59) {
            transform: rotateY(348deg) translateZ(60px);
        }
        .cylinder-nano-segment:nth-child(60) {
            transform: rotateY(354deg) translateZ(60px);
        }

.loading-container {
            position: absolute;
            top: 80%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 300px;
            height: 6px;
            background: rgba(255, 255, 255, 0.3);
            border-radius: 3px;
            overflow: hidden;
            z-index: 10;
        }

.loading-container::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 0%;
            height: 100%;
            background: white;
            border-radius: 3px;
            animation: loadReverse 12s linear forwards;
            animation-delay:3s;
        }

@keyframes loadReverse {
            0% {
                width: 0%;

}
            50% {
                width: 100%;
     
            }
            100% {
                width: 100%;

}
        }

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