.loading {
    background-color: #000000;
    height: 100%;
    left: 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1050;
    opacity: 1;
}
.loading::after {
    content: '';
    -webkit-animation: three-quarters 1250ms infinite linear;
    -moz-animation: three-quarters 1250ms infinite linear;
    -ms-animation: three-quarters 1250ms infinite linear;
    -o-animation: three-quarters 1250ms infinite linear;
    animation: three-quarters 1250ms infinite linear;
    border: 4px solid #65bc46;
    border-right-color: transparent;
    border-radius: 50%;
    box-sizing: border-box;
    display: block;
    margin: 280px auto 0;
    width: 140px;
    height: 140px;
}
@keyframes three-quarters {
    0% {
        -webkit-transform: rotate(0deg);
        -moz-transform: rotate(0deg);
        -ms-transform: rotate(0deg);
        -o-transform: rotate(0deg);
        transform: rotate(0deg);
    }
    100% {
        -webkit-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        -ms-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}