html,
body {
  height: 100%
}

.loader {
    border: 16px solid #696d70; /* Light grey */
    border-top: 16px solid #3498db; /* Blue */
    border-bottom: 16px solid #3498db;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    animation: spin 2s linear infinite;
    z-index: 9999;
    position: fixed;
    top: 50%;
    left: 50%;
    margin-top: -50px;
    margin-left: -50px;
    width: 100px;
    height: 100px;
    display: none;
}

.loaderText {
    font-size: 20px;
    z-index: 9999;
    position: fixed;
    top: 50%;
    left: 50%;
    margin-top: -100px;
    margin-left: -50px;
    width: 100px;
    height: 100px;
    display: block;
    text-align: center;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}