.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.preloader__text {
    position: absolute;
    font-family: Roboto, Helvetica, Arial, sans-serif;
}

.preloader__loader {
    position: relative;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: #348DF5;
    animation: spin 2s linear infinite;
}

.preloader__loader:before {
    content: "";
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: #86BFFB;
    animation: spin 3s linear infinite;
}

.preloader__loader:after {
    content: "";
    position: absolute;
    top: 15px;
    left: 15px;
    right: 15px;
    bottom: 15px;
    border-radius: 50%;
    border: 3px solid transparent;
    border-top-color: #1D75DD;
    animation: spin 1.5s linear infinite;
}

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