.pjax_loading {
  height: 100%;
  width: 100%;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 999999;
  /* 弹性布局 水平+垂直居中 */
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #444;
}


.loader {
  /* 相对定位 */
  position: relative;
  width: 100%;
  height: 60px;
}

.loader span {
  /* 绝对定位 */
  position: absolute;
  width: 30px;
  height: 60px;
  line-height: 60px;
  margin: 0 10px;
  color: #fff;
  font-size: 40px;
  text-align: center;
  /* 默认旋转180度，不透明度为0 */
  transform: rotate(180deg);
  opacity: 0;
  /* 执行动画：动画名 时长 线性的 无限次播放 */
  animation: move 2.5s linear infinite;
}

.loader span::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -20px;
  width: 30px;
  height: 5px;
  border-radius: 50%;
  /* 投影效果+模糊 */
  background-color: rgba(0, 0, 0, 0.15);
  filter: blur(1.5px);
}

/* 分别为每一个span这是动画延迟 */
.loader span:nth-child(2) {
  animation-delay: 0.2s;
}

.loader span:nth-child(3) {
  animation-delay: 0.4s;
}

.loader span:nth-child(4) {
  animation-delay: 0.6s;
}

.loader span:nth-child(5) {
  animation-delay: 0.8s;
}

.loader span:nth-child(6) {
  animation-delay: 1s;
}

.loader span:nth-child(7) {
  animation-delay: 1.2s;
}

.loader span:nth-child(8) {
  animation-delay: 1.4s;
}

.loader span:nth-child(9) {
  animation-delay: 1.6s;
}

.loader span:nth-child(10) {
  animation-delay: 1.8s;
}

/* 最后面的三个圆的统一样式 */
.loader span:nth-child(8)::before,
.loader span:nth-child(9)::before,
.loader span:nth-child(10)::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 13px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
}

/* 为三个圆设置颜色 */
.loader span:nth-child(8)::before {
  background-color: #eccc68;
}

.loader span:nth-child(9)::before {
  background-color: #7bed9f;
}

.loader span:nth-child(10)::before {
  background-color: #ff6b81;
}

/* 定义动画 */
@keyframes move {
  0% {
    right: 0;
    opacity: 0;
  }

  35% {
    right: 41%;
    transform: rotate(0deg);
    opacity: 1;
  }

  65% {
    right: 59%;
    transform: rotate(0deg);
    opacity: 1;
  }

  100% {
    right: 100%;
    transform: rotate(-180deg);
    opacity: 0;
  }
}