.submit-progress-bg {
    background-color: green;
    opacity: .5;
}

.submit-progress {
    position: fixed;
    top: 50%;
    left: 50%;
    height: 6em;
    padding-top: 2.3em;
    /* The following rules are the
    ones most likely to change */
    width: 20em;
    /* Set 'margin-left' to a negative number
    that is 1/2 of 'width' */
    margin-left: -10em;
    padding-left: 2.1em;
    background-color: #36b37e;
    color: white;
    -webkit-border-radius: 0.4em;
    -moz-border-radius: 0.4em;
    border-radius: 0.4em;
    box-shadow: 0.4em 0.4em rgba(0,0,0,0.6);
    -webkit-box-shadow: 0.4em 0.4em rgba(0,0,0,0.6);
    -moz-box-shadow: 0.4em 0.4em rgba(0,0,0,0.6);
}
.hidden,
template {
    display: none;
}