.loader{
  background:#1bb;
  height:100%;
  left:0;
  position:fixed;
  top:0;
  width:100%;
  z-index:10;
}

/* ローディングのアニメーション部分のCSS (https://projects.lukehaas.me/css-loaders/) */
.loader-animation,
.loader-animation:before,
.loader-animation:after {
  background:#ffffff;
  -webkit-animation:load1 1s infinite ease-in-out;
  animation:load1 1s infinite ease-in-out;
  width:1em;
  height:4em;
}
.loader-animation {
  height:10px;
  left:50%;
  margin:-5px 0 0 -5px;
  position:absolute;
  top:50%;
  width:10px;
  color:#ffffff;
  text-indent:-9999em;
  font-size:10px;
  -webkit-transform:translateZ(0);
  -ms-transform:translateZ(0);
  transform:translateZ(0);
  -webkit-animation-delay:-0.16s;
  animation-delay:-0.16s;
}
.loader-animation:before,
.loader-animation:after {
  position:absolute;
  top:0;
  content:'';
}
.loader-animation:before {
  left:-1.5em;
  -webkit-animation-delay:-0.32s;
  animation-delay:-0.32s;
}
.loader-animation:after {
  left:1.5em;
}
@-webkit-keyframes load1 {
  0%,
  80%,
  100% {
    box-shadow:0 0;
    height:4em;
  }
  40% {
    box-shadow:0 -2em;
    height:5em;
  }
}
@keyframes load1 {
  0%,
  80%,
  100% {
    box-shadow:0 0;
    height:4em;
  }
  40% {
    box-shadow:0 -2em;
    height:5em;
  }
}