@-webkit-keyframes spinner-border {
    to { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}

@keyframes spinner-border {
    to { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}

.spinner-border {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    vertical-align: text-bottom;
    border: 0.25em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    -webkit-animation: spinner-border .75s linear infinite;
    animation: spinner-border .75s linear infinite;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.2em;
}

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

@keyframes spinner-grow {
    0% { -webkit-transform: scale(0); transform: scale(0); }
    50% { opacity: 1; 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;
}