Loop the Loop

index.html

<div id="loop" class="center"></div>
<div id="bike-wrapper" class="center">
  <div id="bike" class="centerBike"></div>
</div>

loop-the-loop.markdown

Loop the Loop

A Pen by Adam Doherty on CodePen.

License.

style.css

body {
  background: black;
  overflow: hidden;
}

.centerBike {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: 26px;
  margin-left: -12px;
}

.center {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-top: -50px;
  margin-left: -50px;
}

#loop {
  height: 100px;
  width: 100px;
  border: #bb5f27 solid 4px;
  border-radius: 200px;
}

#loop:before {
  background: -moz-linear-gradient(left, rgba(187, 95, 39, 0) 0%, rgba(187, 95, 39, 1) 30%, rgba(187, 95, 39, 1) 70%, rgba(187, 95, 39, 0) 100%);
  background: -webkit-gradient(linear, left top, right top, color-stop(0%, rgba(187, 95, 39, 0)), color-stop(30%, rgba(187, 95, 39, 1)), color-stop(70%, rgba(187, 95, 39, 1)), color-stop(100%, rgba(187, 95, 39, 0)));
  background: -webkit-linear-gradient(left, rgba(187, 95, 39, 0) 0%, rgba(187, 95, 39, 1) 30%, rgba(187, 95, 39, 1) 70%, rgba(187, 95, 39, 0) 100%);
  background: -o-linear-gradient(left, rgba(187, 95, 39, 0) 0%, rgba(187, 95, 39, 1) 30%, rgba(187, 95, 39, 1) 70%, rgba(187, 95, 39, 0) 100%);
  background: -ms-linear-gradient(left, rgba(187, 95, 39, 0) 0%, rgba(187, 95, 39, 1) 30%, rgba(187, 95, 39, 1) 70%, rgba(187, 95, 39, 0) 100%);
  background: linear-gradient(to right, rgba(187, 95, 39, 0) 0%, rgba(187, 95, 39, 1) 30%, rgba(187, 95, 39, 1) 70%, rgba(187, 95, 39, 0) 100%);
  filter: progid: DXImageTransform.Microsoft.gradient( startColorstr='#00bb5f27', endColorstr='#00bb5f27', GradientType=1);
  content: "";
  display: block;
  height: 4px;
  left: -100px;
  position: relative;
  top: 100px;
  width: 300px;
}

#bike-wrapper {
  height: 108px;
  width: 108px;
  animation: drive 3s linear infinite;
}

#bike {
  height: 24px;
  width: 25px;
  background-image: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/133687/motorbike.png");
}

@keyframes drive {
  0% {
    margin-left: -364px;
    opacity: 0;
  }
  33.33% {
    transform: rotate(0deg);
    margin-left: -50px;
    opacity: 1;
  }
  66.66% {
    transform: rotate(-360deg);
    margin-left: -50px;
    opacity: 1;
  }
  100% {
    margin-left: 264px;
    transform: rotate(-360deg);
    opacity: 0;
  }
}