.css-loader {
    display: block;
    position: fixed;
    width: 100%;
    height: 100%;
    padding: 0;
    margin: 0;
    top: 0;
    left: 0;
    background: rgba(255,255,255,.8);
    z-index: 9999999999;
    display: -webkit-flex;
    display: -moz-flex;
    display: -ms-flex;
    display: -o-flex;
    display: flex;
    -ms-align-items: center;
    align-items: center;
    justify-content: center;
}

.css-loader:before{
    content: "";
    width: 90px;
    height: 90px;
    background: transparent;
    border: 7px solid #d0d0d0;
    border-top-color: tomato;
    border-radius: 50%;
    position: absolute;
    animation: spin 2s reverse linear infinite;
}

.css-loader:after{
    content: "";
    width: 70px;
    height: 70px;
    background: transparent;
    border: 7px solid #d0d0d0;
    border-top-color: tomato;
    border-radius: 50%;
    animation: spin 2s linear infinite;
}


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

.css-loader-dark {
    background: #000;   
}

.css-loader-fade {
    opacity: .8
}