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HTML 

              
                    <body>
      <!-- Ladebalken 1 -->
<div class="lade-container-1">
  <div class="lade-balken-1"></div>
</div>

<!-- Ladebalken 2 -->
<div class="lade-container-2">
  <div class="lade-balken-2" id="balken2"></div>
  <div class="prozent-text-2" id="text2">0%</div>
</div>

<!-- Kreis-Ladeanzeige 3 -->
<div class="kreis-loader-3">
  <svg viewBox="0 0 160 160">
    <circle class="kreis-bg-3" cx="80" cy="80" r="70"/>
    <circle class="kreis-fortschritt-3" cx="80" cy="80" r="70"/>
  </svg>
  <div class="kreis-text-3" id="kreis-prozent-3">0%</div>
</div>

<!-- Ladebalken 4 (stockend) -->
<div class="stockender-container-4">
  <div class="stockender-balken-4" id="balken4"></div>
  <div class="prozent-text-4" id="prozent4">0%</div>
</div>
      <!-- Weitere Ladeelemente -->
        <div class="preset">
            <div class="loader1"></div>
            <div class="loader2container">
                <div class="loader2"></div>
            </div>
            <div class="loader3"></div>
            <div class="loader4">Loading</div>
            <div class="loader5"></div>
            <div class="loader6"></div>
            <div class="loader7"></div>
            <div class="loader8"></div>
            <div class="button"></div>
            <div class="loader9"></div>
        </div>
    </body>
!

CSS 

              
                /* ################################ LADEBALKEN ################################ */
/* Allgemein */
.lade-container-1, .lade-container-2, .stockender-container-4 {
  width: 300px;
  background-color: #ddd;
  border-radius: 6px;
  overflow: hidden;
  margin: 30px auto;
  position: relative;
}

/* Ladebalken 1 */
.lade-container-1 {
  height: 20px;
}
.lade-balken-1 {
  height: 100%;
  width: 0%;
  background-color: #FF3344;
  border-radius: 6px 0 0 6px;
  animation: ladeanimation1 4s ease-in-out infinite;
}
@keyframes ladeanimation1 {
  0%   { width: 0%; }
  66%  { width: 100%; }
  83%  { width: 100%; } 
  100% { width: 0%; }   
}

/* Ladebalken 2 */
.lade-container-2 {
  height: 25px;
}
.lade-balken-2 {
  height: 100%;
  background-color: #FF3344;
  border-radius: 6px 0 0 6px;
}
.prozent-text-2 {
  position: absolute;
  width: 100%;
  top: 0;
  text-align: center;
  line-height: 25px;
  font-weight: bold;
  color: #000;
}

/* Kreis 3 */
.kreis-loader-3 {
  position: relative;
  width: 150px;
  height: 150px;
  margin: 40px auto;
}
.kreis-loader-3 svg {
  transform: rotate(-90deg);
  width: 150px;
  height: 150px;
}
.kreis-bg-3 {
  fill: none;
  stroke: #eee;
  stroke-width: 15;
}
.kreis-fortschritt-3 {
  fill: none;
  stroke: #FF3344;
  stroke-width: 15;
  stroke-linecap: round;
  stroke-dasharray: 440;
  stroke-dashoffset: 440;
  transition: stroke-dashoffset 0.1s;
}
.kreis-text-3 {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-weight: bold;
  font-size: 22px;
  color: #333;
}

/* Ladebalken 4 */
.stockender-container-4 {
  height: 25px;
}
.stockender-balken-4 {
  height: 100%;
  width: 0%;
  background-color: #FF3344;
  transition: width 0.4s ease-out;
}
.prozent-text-4 {
  position: absolute;
  right: 10px;
  top: 2px;
  font-weight: bold;
  color: #000;
}

            /* ################################ WEITERE LADEELEMENTE ################################ */
            .preset {
                display:flex;
                flex-direction: column;
                -ms-flex-align: center;
                          display:flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;

                gap:2rem;

                margin-top: 1.5rem;
                margin-left: 1rem;
                border: 0;
                padding: 1rem;
                
                background-color:white;
            }
            .loader1 {
            display: flex;
            justify-content: center;
            align-items: center;
            margin: 0 auto;
            width: 3.25rem;
            aspect-ratio: 1;
            border-radius: 50%;
            border: 0.5rem solid #FF3344;
            animation:
                l20-1 1.0s infinite linear alternate,
                l20-2 2.0s infinite linear;
            }
            @keyframes l20-1{
            0%    {clip-path: polygon(50% 50%,0       0,  50%   0%,  50%    0%, 50%    0%, 50%    0%, 50%    0% )}
            12.5% {clip-path: polygon(50% 50%,0       0,  50%   0%,  100%   0%, 100%   0%, 100%   0%, 100%   0% )}
            25%   {clip-path: polygon(50% 50%,0       0,  50%   0%,  100%   0%, 100% 100%, 100% 100%, 100% 100% )}
            50%   {clip-path: polygon(50% 50%,0       0,  50%   0%,  100%   0%, 100% 100%, 50%  100%, 0%   100% )}
            62.5% {clip-path: polygon(50% 50%,100%    0, 100%   0%,  100%   0%, 100% 100%, 50%  100%, 0%   100% )}
            75%   {clip-path: polygon(50% 50%,100% 100%, 100% 100%,  100% 100%, 100% 100%, 50%  100%, 0%   100% )}
            100%  {clip-path: polygon(50% 50%,50%  100%,  50% 100%,   50% 100%,  50% 100%, 50%  100%, 0%   100% )}
            }
            @keyframes l20-2{ 
            0%    {transform:scaleY(1)  rotate(0deg)}
            49.99%{transform:scaleY(1)  rotate(135deg)}
            50%   {transform:scaleY(-1) rotate(0deg)}
            100%  {transform:scaleY(-1) rotate(-135deg)}
            }


            /* HTML: <div class="loader"></div> */
            .loader2 {
            width: 2.5rem;
            height: 2.5rem;
            color: #ff3344;
            background:
                conic-gradient(from  -45deg at top    1.25rem left 50% ,#0000 ,currentColor 1deg 90deg,#0000 91deg),
                conic-gradient(from   45deg at right  1.25rem top  50% ,#0000 ,currentColor 1deg 90deg,#0000 91deg),
                conic-gradient(from  135deg at bottom 1.25rem left 50% ,#0000 ,currentColor 1deg 90deg,#0000 91deg),
                conic-gradient(from -135deg at left   1.25rem top  50% ,#0000 ,currentColor 1deg 90deg,#0000 91deg);
            animation: l4 1.5s infinite cubic-bezier(0.3,1,0,1);
            }
            @keyframes l4 {
            50%  {width:3.75rem;height: 3.75rem;transform: rotate(180deg)}
            100% {transform: rotate(360deg)}
            }

            .loader2container {
                width: 3.75rem;
                height: 3.75rem;
                display: flex;
                justify-content: center;
                align-items: center;
            }

            .loader3 {
            width: 1.25rem;
            aspect-ratio: 1;
            background: #FF3344;
            box-shadow: 0 0 3.75rem 0.9375rem #aa6060;
            position: relative;
            left: 2.5rem;
            clip-path: inset(0);
            animation:
                l4-1 0.5s ease-in-out infinite alternate,
                l4-2 1s   ease-in-out infinite;
            }
            @keyframes l4-1 {
            0% {transform: translateX(-2.5rem)}
            100% {transform: translateX(2.5rem)}
            }
            @keyframes l4-2 {
            33% {clip-path: inset(0 0 0 -6.25rem)}
            50% {clip-path: inset(0 0 0 0)     }
            83% {clip-path: inset(0 -6.25rem 0 0)}
            }

            .loader4 {
            width: fit-content;
            font-size: 2.5rem;
            font-family: system-ui,sans-serif;
            font-weight: bold;
            text-transform: uppercase;
            color: #0000;
            -webkit-text-stroke: 0.0625rem #000;
            background: conic-gradient(#FF3344 0 0) 0/0% 100% no-repeat text;
            animation: l1 1s linear infinite;
            }
            @keyframes l1 {
            to{background-size: 120% 100%}
            }

        .loader5 {
            position: relative;
            width: 6.25rem;
            height: 1rem;
        }
        .loader5:before , .loader5:after{
            content: "";
            position: absolute;
            width: 1rem;
            height: 1rem;
            border-radius: 50%;
            background: #FF3344;
            box-shadow: 2rem 0 #FF3344;
            left: 0;
            top: 0;
            animation: ballMoveX 1s linear infinite;
        }
        .loader5:after {
            box-shadow: none;
            transform-origin: 2.5rem 0;
            transform: rotate(-153deg);
            animation: rotateLoader 1s linear infinite;
        }

        @keyframes rotateLoader {
            0% , 10%{ transform: rotate(-153deg); }
            90%, 100% { transform: rotate(0deg); }
        }
        @keyframes ballMoveX {
            0% , 10%{  transform: translateX(0) }
            90%, 100% { transform: translateX(2rem) }
        }
        .loader6 {
        width: 5.25rem;
        height: 3.25rem;
        --g1:conic-gradient(from  90deg at left   0.2rem top   0.2rem,#ff3344 90deg,#FF3344 0);
        --g2:conic-gradient(from -90deg at bottom 0.2rem right 0.2rem,#ff3344 90deg,#FF3344 0);
        background:var(--g1),var(--g1),var(--g1), var(--g2),var(--g2),var(--g2);
        background-position: left,center,right;
        background-repeat: no-repeat;
        animation: l8 1s infinite;
        }
        @keyframes l8 {
        0%   {background-size:1.5rem 50% ,1.5rem 50% ,1.5rem 50%}
        25%  {background-size:1.5rem 100%,1.5rem 50% ,1.5rem 50%}
        50%  {background-size:1.5rem 50% ,1.5rem 100%,1.5rem 50%}
        75%  {background-size:1.5rem 50% ,1.5rem 50% ,1.5rem 100%}
        100% {background-size:1.5rem 50% ,1.5rem 50% ,1.5rem 50%}
        }
        .loader7 {
        height: 12.5rem;
        aspect-ratio: 1;
        border-bottom: 0.125rem solid #FF3344;
        position: relative;
        overflow: hidden;
        }
        .loader7:before {
        content: "";
        position: absolute;
        inset: auto 42.5% 0;
        aspect-ratio: 1;
        width: 3.75rem;
        height: 3.75rem;
        background-image: url('https://0t1.de/media/site/526e486edf-1693905327/otl.svg'); /* Hier eigenen Pfad zum Logo einfügen */ 
        background-size: contain;
        background-repeat: no-repeat;
        background-position: center;
        animation: 
        l1-0 1.5s cubic-bezier(0,900,1,900) infinite,
        l1-1  3s linear infinite;
        }
        @keyframes l1-0 {
        0%,25% {bottom: 0%}
        98%,to {bottom:.1%}
        }
        @keyframes l1-1 {
        0% {translate: -500%}
        to {translate: 500%}
        }    

        .loader8 {
        width: 8.75rem;
        height: 1.5rem;
        mask:
            radial-gradient(circle closest-side,#000 94%,#0000) 0 0/20% 100%,
            linear-gradient(#000 0 0) center/calc(100% - 0.75rem) calc(100% - 0.75rem) no-repeat;
        background:
        linear-gradient(#FF3344 0 0) 0/0% no-repeat
        #ddd;

        }
        .button {
        font-size: 1.5rem;
        font-family: Verdana, sans-serif;
        color: white;
        background-color: #ff3344;
        height: 3.5rem;
        width: 13.75rem;
        margin: 0.3em;
        border-radius: 2em;
        border: none;
        outline: none;
        cursor: pointer;
        box-shadow: 0 0.5rem 0 #ba2330;
        display: flex;
        justify-content: center;
        align-items: center;
        }
        .button:active {
        box-shadow: none;
        transform: translateY(0.5rem);
        transition: all.1s;
        }
        .button:before {
        content: "Update";
        }
        .loader9 {
    position: relative;
    height: 320px;
  }
  .loader9:after {
    content: '';
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    background-repeat: no-repeat;
    background-image: linear-gradient( 90deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.8) 50%, rgba(255, 255, 255, 0) 100% ), 
        radial-gradient( circle 48px at 48px 48px, #aaaaaa 100%, transparent 0 ), 
        linear-gradient(#aaaaaa 16px, transparent 0), 
        linear-gradient(#aaaaaa 16px, transparent 0), 
        linear-gradient(#aaaaaa 16px, transparent 0), 
        linear-gradient(#aaaaaa 16px, transparent 0), 
        linear-gradient(#aaaaaa 16px, transparent 0), 
        linear-gradient(#aaaaaa 16px, transparent 0), 
        linear-gradient(#aaaaaa 16px, transparent 0), 
      linear-gradient(#e4d8d8 100%, transparent 0);
    background-size: 264px 100%, 96px 96px, 128px 16px, 256px 16px, 496px 16px, 496px 16px, 496px 16px, 496px 16px, 496px 16px, 100% 100%;
    background-position: 0 0 , 16px 16px, 128px 40px, 128px 72px, 16px 128px, 16px 160px, 16px 192px, 16px 224px, 16px 256px, 0 0;
    animation: skeleton-animation 3400ms infinite;
  }
  
  @keyframes skeleton-animation {
    to {
      background-position: 100% 0, 16px 16px, 128px 40px, 128px 72px, 16px 128px, 16px 160px, 16px 192px, 16px 224px, 16px 256px, 0 0;
    }
  }
!

JS 

              
                // Ladebalken 2 (linear)
const balken2 = document.getElementById("balken2");
const text2 = document.getElementById("text2");

function starteBalken2() {
  let wert2 = 0;
  const timer2 = setInterval(() => {
    wert2++;
    if (wert2 > 100) {
      clearInterval(timer2);
      setTimeout(starteBalken2, 1000);
    } else {
      balken2.style.width = wert2 + "%";
      text2.textContent = wert2 + "%";
    }
  }, 40);
}
starteBalken2();

// Kreisfortschritt 3
const kreis3 = document.querySelector('.kreis-fortschritt-3');
const kreisText3 = document.getElementById('kreis-prozent-3');
const umfang3 = 2 * Math.PI * 70;

function starteKreis3() {
  let wert3 = 0;
  const interval3 = setInterval(() => {
    if (wert3 > 100) {
      clearInterval(interval3);
      setTimeout(starteKreis3, 1000);
    } else {
      const offset3 = umfang3 - (wert3 / 100) * umfang3;
      kreis3.style.strokeDashoffset = offset3;
      kreisText3.textContent = wert3 + '%';
      wert3++;
    }
  }, 40);
}
kreis3.style.strokeDasharray = umfang3;
starteKreis3();

// Ladebalken 4 (stockend)
const balken4 = document.getElementById('balken4');
const text4 = document.getElementById('prozent4');

function ladeStockend4() {
  let fortschritt4 = 0;

  function update4() {
    let schritt4 = Math.floor(Math.random() * 15) + 5;
    fortschritt4 += schritt4;
    if (fortschritt4 > 100) fortschritt4 = 100;

    balken4.style.width = fortschritt4 + '%';
    text4.textContent = fortschritt4 + '%';

    if (fortschritt4 < 100) {
      setTimeout(update4, Math.random() * 800 + 200);
    } else {
      setTimeout(() => {
        balken4.style.width = '0%';
        text4.textContent = '0%';
        ladeStockend4();
      }, 1000);
    }
  }

  update4();
}
ladeStockend4();

//Funktionaler Fortschrittsbalken
            document.addEventListener('DOMContentLoaded', function() {
                const button = document.querySelector('.button');
                const progressBar = document.querySelector('.loader8');
                let progressState = 0;
                
                button.addEventListener('click', function() {
                    // Cycle through progress states: 0%, 20%, 40%, 60%, 80%, 100%
                    progressState = (progressState + 1) % 6;
                    const progressPercentage = progressState * 20;
                    
                    // Update the progress bar
                    progressBar.style.backgroundSize = progressPercentage + '%';
                });
            });
!
999px

Console