<div class="container">
  <div class="wrapper">
    <div class="circle"></div>
  </div>
</div>

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

.container {
  width: 100%;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #000;
}

.wrapper {
  width: 200px;
  height: 200px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.circle {
  width: 100px;
  height: 100px;
  position: relative;
  border-radius: 50%;
  border: 5px dashed #555;
}

.circle::before,
.circle::after {
  content: "";
  width: 100%;
  height: 100%;
  border-radius: 50%;
  position: absolute;
  top: -5px;
  left: -5px;
  border: 5px solid transparent;
  animation: rotate 1.25s ease infinite;
}

.circle::before {
  border-top-color: #ffb400;
}

.circle::after {
  border-top-color: transparent;
  border-bottom-color: #00a6ed;
}

@keyframes rotate {
  100% {
    transform: rotate(360deg);
  }
}