.preloader{
    position: relative;
    height: 75px;
    width: 75px;
    margin: 50px auto 0;
}

.spinner{
    width: 75px;
    height: 75px;
    margin: 0;
    border-top: 10px solid #ff3f34;
    box-shadow: 4px 4px 5px #d2d2d2 inset;
    border-right: 10px solid transparent;
    border-radius: 50%;
    animation: 1.5s spin linear infinite;
}
.spinner-2{
    width: 75px;
    height: 75px;
    margin: 0;
    border-top: 10px solid #0fbcf9;
    border-left: 10px solid transparent;
    border-radius: 50%;
    position: absolute;
    top: 0;
    animation: 1.5s spin-2 linear infinite;
}

@keyframes spin{
    from{ transform: rotate(0deg); }
    to{ transform: rotate(360deg); }
}

@keyframes spin-2{
    from{ transform: rotate(360deg); }
    to{ transform: rotate(0deg); }
}