Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.14)
// Compass (v1.0.0.rc.1)
// ----

/*=================================
=            Preloader            =
=================================*/

$size : 150px;

.preloader_ {
    position: fixed;
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    background-color: #f5f5f5;
    z-index: 9999;

    .loading {
        position: absolute;
        top: 50%;
        left: 50%;
        margin-left: -($size / 2);
        margin-top: -($size / 2);
        text-align: center;
        font-size: 18px;
        font-family: Lato;
        color: #333;
        width: $size;
        vertical-align: center;

        span {
            display: block;
            margin: 0 auto;
        }

        span[class*="l-"] {
            display: inline-block;
            background: #000;
            width: 4px;
            height: 4px;

            border-radius: 100%;

            margin: 12px 2px;
            position: relative;

            animation: loading-item 4s infinite;
            animation-timing-function: cubic-bezier(0.030, 0.615, 0.995, 0.415);
            animation-fill-mode: both;
        }

        span.l-1 {
            animation-delay: 1s;
        }
        span.l-2 {
            animation-delay: 0.8s;
        }
        span.l-3 {
            animation-delay: 0.6s;
        }
        span.l-4 {
            animation-delay: 0.4s;
        }
        span.l-5 {
            animation-delay: 0.2s;
        }
        span.l-6 {
            animation-delay: 0s;
        }
    }
}

@keyframes loading-item {
    0% {
        transform: translateX(-30px);
        opacity: 0;
    }
    25% {
        opacity: 1;
    }
    50% {
        transform: translateX(30px);
        opacity: 0;
    }
    100% {
        opacity: 0;
    }
}

SassMeister-output.css

/*=================================
=            Preloader            =
=================================*/
.preloader_ {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  background-color: #f5f5f5;
  z-index: 9999;
}
.preloader_ .loading {
  position: absolute;
  top: 50%;
  left: 50%;
  margin-left: -75px;
  margin-top: -75px;
  text-align: center;
  font-size: 18px;
  font-family: Lato;
  color: #333;
  width: 150px;
  vertical-align: center;
}
.preloader_ .loading span {
  display: block;
  margin: 0 auto;
}
.preloader_ .loading span[class*="l-"] {
  display: inline-block;
  background: #000;
  width: 4px;
  height: 4px;
  border-radius: 100%;
  margin: 12px 2px;
  position: relative;
  animation: loading-item 4s infinite;
  animation-timing-function: cubic-bezier(0.03, 0.615, 0.995, 0.415);
  animation-fill-mode: both;
}
.preloader_ .loading span.l-1 {
  animation-delay: 1s;
}
.preloader_ .loading span.l-2 {
  animation-delay: 0.8s;
}
.preloader_ .loading span.l-3 {
  animation-delay: 0.6s;
}
.preloader_ .loading span.l-4 {
  animation-delay: 0.4s;
}
.preloader_ .loading span.l-5 {
  animation-delay: 0.2s;
}
.preloader_ .loading span.l-6 {
  animation-delay: 0s;
}

@keyframes loading-item {
  0% {
    transform: translateX(-30px);
    opacity: 0;
  }

  25% {
    opacity: 1;
  }

  50% {
    transform: translateX(30px);
    opacity: 0;
  }

  100% {
    opacity: 0;
  }
}