.loader-container {
    z-index: 1999;
    position: absolute;
    height: 100%;
    width: 100%;
    display: none;
    justify-content: center;
    align-items: center;
    background-color: rgba(0, 0, 0, 0.6);
    top: 0;
    left: 0;
}

/* https://cssloaders.github.io */
.loader {
    z-index: 1998;
    width: 120px;
    height: 120px;
    border: 8px solid #FFF;
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
  }
  .loader::after {
      content: '';  
    box-sizing: border-box;
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 100px;
      height: 100px;
      border-radius: 50%;
      border: 8px solid transparent;
      border-bottom-color: var(--blue);
  }
      
  @keyframes rotation {
    0% {
      transform: rotate(0deg);
    }
    100% {
      transform: rotate(360deg);
    }
  }