.altcha-field .altcha-checkbox input[type="checkbox"],
.altcha-field .altcha-checkbox-native input[type="checkbox"] {
    display: block;
    visibility: visible;
    opacity: 1;
    width: var(--altcha-checkbox-size, 20px);
    height: var(--altcha-checkbox-size, 20px);
    min-height: 0;
    padding: 0;
}

.altcha-field .altcha-checkbox[data-loading="true"] input[type="checkbox"],
.altcha-field .altcha-checkbox-native[data-loading="true"] input[type="checkbox"] {
    opacity: 0;
    pointer-events: none;
}