@-webkit-keyframes spinner-grow {
    0% {
        -webkit-transform: scale(0);
        transform: scale(0)
    }
    50% {
        opacity: 1;
        -webkit-transform: none;
        transform: none
    }
}

@keyframes spinner-grow {
    0% {
        -webkit-transform: scale(0);
        transform: scale(0)
    }
    50% {
        opacity: 1;
        -webkit-transform: none;
        transform: none
    }
}

.spinner-grow {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: text-bottom;
    background-color: currentColor;
    border-radius: 50%;
    opacity: 0;
    -webkit-animation: spinner-grow .75s linear infinite;
    animation: spinner-grow .75s linear infinite
}

.spinner-grow-sm {
    width: 1rem;
    height: 1rem
}