Why is animation not working in google chrome?

Question

css

The animation does not work only in the Google Chrome browser. Set up prefixes. What am I doing wrong please tell me.

@-moz-keyframes rotate-loading {
    0 {
        -ms-transform: rotate(0);
        -webkit-transform: rotate(0);
        -o-transform: rotate(0);
        -moz-transform: rotate(0);
        transform: rotate(0);
    }

    100% {
        -ms-transform: rotate(360deg);
        -webkit-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@-webkit-keyframes rotate-loading {
    0 {
        -ms-transform: rotate(0);
        -webkit-transform: rotate(0);
        -o-transform: rotate(0);
        -moz-transform: rotate(0);
        transform: rotate(0);
    }

    100% {
        -ms-transform: rotate(360deg);
        -webkit-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@-o-keyframes rotate-loading {
    0 {
        -ms-transform: rotate(0);
        -webkit-transform: rotate(0);
        -o-transform: rotate(0);
        -moz-transform: rotate(0);
        transform: rotate(0);
    }

    100% {
        -ms-transform: rotate(360deg);
        -webkit-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

@keyframes rotate-loading {
    0 {
        -ms-transform: rotate(0);
        -webkit-transform: rotate(0);
        -o-transform: rotate(0);
        -moz-transform: rotate(0);
        transform: rotate(0);
    }

    100% {
        -ms-transform: rotate(360deg);
        -webkit-transform: rotate(360deg);
        -o-transform: rotate(360deg);
        -moz-transform: rotate(360deg);
        transform: rotate(360deg);
    }
}

.loading * {
    display: none !important;
}

.loading:after {
    content: " ";
    position: absolute;
    height: 50px;
    width: 50px;
    left: 0;
    right: 0;
    margin: 20px auto;
    border-radius: 100%;
    border: 2px solid transparent;
    border-color: transparent #ddd transparent #ddd;
    -moz-animation: rotate-loading 1.5s linear 0 infinite normal;
    -o-animation: rotate-loading 1.5s linear 0 infinite normal;
    -webkit-animation: rotate-loading 1.5s linear 0 infinite normal;
    animation: rotate-loading 1.5s linear 0 infinite normal;
    -moz-transform-origin: 50% 50%;
    -o-transform-origin: 50% 50%;
    -webkit-transform-origin: 50% 50%;
    transform-origin: 50% 50%
}

Answer 1

What is zero?
animation: rotate-loading 1.5s linear 0 infinite normal;
is it animation-delay? You need to specify the postfix s to it
this is how it will work