.ft-iframe-spinner {
    font-size: 4rem;
    border: .4em solid #fff;
    border-top-color: rgba(255,255,255,.5);
    border-radius: 50%;
    width: 8em;
    height: 8em;
    animation: ft-spinner 1s linear infinite;
    margin: 0 auto;
    text-align:center;
    box-sizing: border-box;
    display: inline-block;
}

.ft-spinner {
    font-size: 0.5rem;
    border: .4em solid #fff;
    border-top-color: rgba(255,255,255,.5);
    border-radius: 50%;
    width: 2em;
    height: 2em;
    animation: ft-spinner 1s linear infinite;
    /*margin: 0 auto;*/
    margin-left: 0.5em;
    margin-right: 0.5em;
    box-sizing: border-box;
    display: inline-block;
}

@keyframes ft-spinner {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}