<div class="preloader">
  <svg class="cart" role="img" aria-label="Shopping cart line animation" viewBox="0 0 128 128" width="128px" height="128px" xmlns="http://www.w3.org/2000/svg">
    <g fill="none" stroke-linecap="round" stroke-linejoin="round" stroke-width="8">
      <g class="cart__track" stroke="hsla(0,10%,10%,0.1)">
        <polyline points="4,4 21,4 26,22 124,22 112,64 35,64 39,80 106,80" />
        <circle cx="43" cy="111" r="13" />
        <circle cx="102" cy="111" r="13" />
      </g>
      <g class="cart__lines" stroke="currentColor">
        <polyline class="cart__top" points="4,4 21,4 26,22 124,22 112,64 35,64 39,80 106,80" stroke-dasharray="338 338" stroke-dashoffset="-338" />
        <g class="cart__wheel1" transform="rotate(-90,43,111)">
          <circle class="cart__wheel-stroke" cx="43" cy="111" r="13" stroke-dasharray="81.68 81.68" stroke-dashoffset="81.68" />
        </g>
        <g class="cart__wheel2" transform="rotate(90,102,111)">
          <circle class="cart__wheel-stroke" cx="102" cy="111" r="13" stroke-dasharray="81.68 81.68" stroke-dashoffset="81.68" />
        </g>
      </g>
    </g>
  </svg>
  <div class="preloader__text">
    <p class="preloader__msg">Bringing you the goods…</p>
    <p class="preloader__msg preloader__msg--last">This is taking long. Something’s wrong.</p>
  </div>
</div>

* {
  border: 0;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
:root {
  --hue: 223;
  --bg: hsl(var(--hue),10%,90%);
  --fg: hsl(var(--hue),10%,10%);
  --primary: hsl(var(--hue),90%,55%);
  --trans-dur: 0.3s;
  font-size: calc(16px + (20 - 16) * (100vw - 320px) / (1280 - 320));
}
body {
  background-color: var(--bg);
  color: var(--fg);
  font: 1em/1.5 "DM Sans", sans-serif;
  height: 100vh;
  display: grid;
  place-items: center;
  transition:
    background-color var(--trans-dur),
    color var(--trans-dur);
}
.preloader {
  text-align: center;
  max-width: 20em;
  width: 100%;
}
.preloader__text {
  position: relative;
  height: 1.5em;
}
.preloader__msg {
  animation: msg 0.3s 13.7s linear forwards;
  position: absolute;
  width: 100%;
}
.preloader__msg--last {
  animation-direction: reverse;
  animation-delay: 14s;
  visibility: hidden;
}
.cart {
  display: block;
  margin: 0 auto 1.5em auto;
  width: 8em;
  height: 8em;
}
.cart__lines,
.cart__top,
.cart__wheel1,
.cart__wheel2,
.cart__wheel-stroke {
  animation: cartLines 2s ease-in-out infinite;
}
.cart__lines {
  stroke: var(--primary);
}
.cart__top {
  animation-name: cartTop;
}
.cart__wheel1 {
  animation-name: cartWheel1;
  transform: rotate(-0.25turn);
  transform-origin: 43px 111px;
}
.cart__wheel2 {
  animation-name: cartWheel2;
  transform: rotate(0.25turn);
  transform-origin: 102px 111px;
}
.cart__wheel-stroke {
  animation-name: cartWheelStroke
}
.cart__track {
  stroke: hsla(var(--hue),10%,10%,0.1);
  transition: stroke var(--trans-dur);
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: hsl(var(--hue),10%,10%);
    --fg: hsl(var(--hue),10%,90%);
  }
  .cart__track {
    stroke: hsla(var(--hue),10%,90%,0.1);
  }
}

/* Animations */
@keyframes msg {
  from {
    opacity: 1;
    visibility: visible;
  }
  99.9% {
    opacity: 0;
    visibility: visible;
  }
  to {
    opacity: 0;
    visibility: hidden;
  }
}
@keyframes cartLines {
  from,
  to {
    opacity: 0;
  }
  8%,
  92% {
    opacity: 1;
  }
}
@keyframes cartTop {
  from {
    stroke-dashoffset: -338;
  }
  50% {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: 338;
  }
}
@keyframes cartWheel1 {
  from {
    transform: rotate(-0.25turn);
  }
  to {
    transform: rotate(2.75turn);
  }
}
@keyframes cartWheel2 {
  from {
    transform: rotate(0.25turn);
  }
  to {
    transform: rotate(3.25turn);
  }
}
@keyframes cartWheelStroke {
  from,
  to {
    stroke-dashoffset: 81.68;
  }
  50% {
    stroke-dashoffset: 40.84;
  }
}