A CodePen by Abderrahmane-TJ. The Mother, the daughter and her children - There is nothing interesting to say about this pen. Other than the fact that it is the first time I had a go on css3 animations and transform.

index.haml

.c
  .intro.animation
    .r
      .r
        .r.red
          .r
            .r.red
              .r.red
              .r
            .r
          .r
        .r.red
      .r
    .r

style.scss

@import "compass";
@-webkit-keyframes infinite-spinning {
  from {-webkit-transform: rotate(0deg);}
  to {-webkit-transform: rotate(360deg);}
}
*{padding: 0;margin: 0;@include box-sizing(border-box);}
html {width: 100%;height: 100%;}
body{@include display-box;@include box-align(center);@include box-pack(center);height: 100%;width: 100%;}
.c{
  position: relative;
}
.r{
  background-color: white;  
  width: 300px; 
  height: 10px;
  opacity: .75;
  @include background-origin(border-box);
  position: absolute;
  top: 0px;
  left: 0px;
}
.animation{
  .r{
    animation: infinite-spinning 30s infinite linear;
  }
  >.r{
    left: -150px;
  }
}

.red{
    background-color: #f16362 !important;
}
.blue{
    background-color: #578ac7 !important;
}
.black{
    background-color: #3b4647 !important;
}