Egg-loading

/*Downloaded from https://www.codeseek.co/yuanyu/egg-loading-VzWEma */
body {
  background-color: #539CD6;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.fixed-box {
  position: relative;
  min-height: 68vh;
  width: 50vw;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.ruler {
  height: 1px;
  width: 50vw;
  background-color: #fff;
  position: relative;
}
.ruler:before {
  content: '';
  height: 1em;
  width: .3em;
  background: #fff;
  position: absolute;
  top: 0;
  color: #fff;
  box-shadow: 5vw 0px, 10vw 0px, 15vw 0px, 20vw 0px, 25vw 0px, 30vw 0px, 35vw 0px, 40vw 0px, 45vw 0px, 50vw 0px;
}
.ruler:after {
  content: '';
  height: 0;
  width: 0;
  position: absolute;
  left: -.35em;
  top: -1em;
  border-width: .5em;
  border-style: solid;
  border-color: #fff transparent transparent transparent;
  -webkit-animation: slider 3s ease-in-out alternate infinite;
          animation: slider 3s ease-in-out alternate infinite;
}
.ruler .mark {
  position: absolute;
  color: #fff;
  top: 1em;
}
.ruler .mark:nth-child(1) {
  left: -.25em;
}
.ruler .mark:nth-child(2) {
  left: 24vw;
}
.ruler .mark:last-child {
  left: 49vw;
}

.egg-shell {
  font-size: 30vh;
  margin: 0;
  padding: 0;
  height: 1em;
  width: 0.7em;
  border-radius: 60% 60% 55% 55%/ 70% 70% 45% 45%;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  background-color: #fff;
  -webkit-transform-origin: 50% 75%;
          transform-origin: 50% 75%;
  -webkit-animation: roll 1s linear infinite forwards;
          animation: roll 1s linear infinite forwards;
  box-sizing: border-box;
}
.egg-shell .egg-yellow {
  height: 0.4em;
  width: 0.4em;
  border-radius: 50%;
  background: #FCE62D;
  position: absolute;
  bottom: .05em;
  -webkit-transform-origin: 50% 50%;
          transform-origin: 50% 50%;
  box-sizing: border-box;
  -webkit-animation: colorCh 1.5s linear infinite forwards;
          animation: colorCh 1.5s linear infinite forwards;
}

@-webkit-keyframes roll {
  33% {
    -webkit-transform: translateY(0.12em) rotate(120deg);
            transform: translateY(0.12em) rotate(120deg);
  }
  66% {
    -webkit-transform: translateY(-0.12em) rotate(240deg);
            transform: translateY(-0.12em) rotate(240deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}

@keyframes roll {
  33% {
    -webkit-transform: translateY(0.12em) rotate(120deg);
            transform: translateY(0.12em) rotate(120deg);
  }
  66% {
    -webkit-transform: translateY(-0.12em) rotate(240deg);
            transform: translateY(-0.12em) rotate(240deg);
  }
  100% {
    -webkit-transform: rotate(360deg);
            transform: rotate(360deg);
  }
}
@-webkit-keyframes colorCh {
  0%,32.5% {
    background-color: #FCE62D;
  }
  33%,66.5% {
    background-color: #FCD22D;
  }
  67%, 100% {
    background-color: #FCE62D;
  }
}
@keyframes colorCh {
  0%,32.5% {
    background-color: #FCE62D;
  }
  33%,66.5% {
    background-color: #FCD22D;
  }
  67%, 100% {
    background-color: #FCE62D;
  }
}
@-webkit-keyframes slider {
  to {
    -webkit-transform: translatex(50vw);
            transform: translatex(50vw);
  }
}
@keyframes slider {
  to {
    -webkit-transform: translatex(50vw);
            transform: translatex(50vw);
  }
}