Code Loading Dạng Cầu Vòng

Demo: http://codepen.io/Beohoavinh/full/QdPbeB/

Css:

.loader {
    background: #000;
    background: radial-gradient(#222, #000);
    bottom: 0;
    left: 0;
    overflow: hidden;
    position: fixed;
    right: 0;
    top: 0;
    z-index: 99999;
}

.loader-inner {
    bottom: 0;
    height: 60px;
    left: 0;
    margin: auto;
    position: absolute;
    right: 0;
    top: 0;
    width: 100px;
}

.loader-line-wrap {
    animation: 
  spin 2000ms cubic-bezier(.175, .885, .32, 1.275) infinite
 ;
    box-sizing: border-box;
    height: 50px;
    left: 0;
    overflow: hidden;
    position: absolute;
    top: 0;
    transform-origin: 50% 100%;
    width: 100px;
}
.loader-line {
    border: 4px solid transparent;
    border-radius: 100%;
    box-sizing: border-box;
    height: 100px;
    left: 0;
    margin: 0 auto;
    position: absolute;
    right: 0;
    top: 0;
    width: 100px;
}
.loader-line-wrap:nth-child(1) { animation-delay: -50ms; }
.loader-line-wrap:nth-child(2) { animation-delay: -100ms; }
.loader-line-wrap:nth-child(3) { animation-delay: -150ms; }
.loader-line-wrap:nth-child(4) { animation-delay: -200ms; }
.loader-line-wrap:nth-child(5) { animation-delay: -250ms; }

.loader-line-wrap:nth-child(1) .loader-line {
    border-color: hsl(0, 80%, 60%);
    height: 90px;
    width: 90px;
    top: 7px;
}
.loader-line-wrap:nth-child(2) .loader-line {
    border-color: hsl(60, 80%, 60%);
    height: 76px;
    width: 76px;
    top: 14px;
}
.loader-line-wrap:nth-child(3) .loader-line {
    border-color: hsl(120, 80%, 60%);
    height: 62px;
    width: 62px;
    top: 21px;
}
.loader-line-wrap:nth-child(4) .loader-line {
    border-color: hsl(180, 80%, 60%);
    height: 48px;
    width: 48px;
    top: 28px;
}
.loader-line-wrap:nth-child(5) .loader-line {
    border-color: hsl(240, 80%, 60%);
    height: 34px;
    width: 34px;
    top: 35px;
}

@keyframes spin {
    0%, 15% {
  transform: rotate(0);
 }
 100% {
  transform: rotate(360deg);
 }
}

Chèn Code hiển thị vào:

<div class="loader">
 <div class="loader-inner">
  <div class="loader-line-wrap">
   <div class="loader-line"></div>
  </div>
  <div class="loader-line-wrap">
   <div class="loader-line"></div>
  </div>
  <div class="loader-line-wrap">
   <div class="loader-line"></div>
  </div>
  <div class="loader-line-wrap">
   <div class="loader-line"></div>
  </div>
  <div class="loader-line-wrap">
   <div class="loader-line"></div>
  </div>
 </div>
</div>

- Trong quá trình viết bài chúng tôi sẽ có nhiều thiếu sót mong các bạn đóng góp để chúng tôi rút kinh nghiệm hơn !
- Mọi chi tiết xin liên hệ:
- Email: lephuocsinh96@gmail.com
- Facebook: Fb.com/beohoavinh