I fixed it by myself.
Edit file: /templates/ja_purity_iv/html/layouts/t4/element/logo.php
from Line 52:
<?php if ($logo) : ?>
<span class="d-light">
<img class="logo-img" width="<?php echo $width ?: "";?>" height="<?php echo $height ?: "";?>" src="<?php echo $logo; ?>" alt="<?php echo strip_tags($site_name); ?>" />
</span>
<?php if ($logo_dark) : ?>
<span class="d-dark">
<img class="logo-img" width="<?php echo $width ?: "";?>" height="<?php echo $height ?: "";?>" src="<?php echo $logo_dark; ?>" alt="<?php echo strip_tags($site_name); ?>" />
</span>
<?php endif; ?>
<?php else : ?>
to:
<?php if ($logo) : ?>
<span class="d-light <?php echo $logo_sm_cls; ?>">
<img class="logo-img" width="<?php echo $width ?: "";?>" height="<?php echo $height ?: "";?>" src="<?php echo $logo; ?>" alt="<?php echo strip_tags($site_name); ?>" />
</span>
<?php if ($logo_dark) : ?>
<span class="d-dark <?php echo $logo_sm_cls; ?>">
<img class="logo-img" width="<?php echo $width ?: "";?>" height="<?php echo $height ?: "";?>" src="<?php echo $logo_dark; ?>" alt="<?php echo strip_tags($site_name); ?>" />
</span>
<?php endif; ?>
<?php else : ?>
-> change <span class="d-light"> to <span class="d-light <?php echo $logo_sm_cls; ?>">
-> change <span class="d-dark "> to <span class="d-dark <?php echo $logo_sm_cls; ?>">
and Add some in costum.css:
/* off-canvas Gestaltung dark/light /
/ light aktiv */
.t4-off-canvas-header .d-light.d-none.d-sm-block {
display:block!important;
}
.t4-off-canvas-header .d-dark.d-none.d-sm-block {
display:none!important;
}
/* dark aktiv */
body.dark-active .t4-off-canvas-header .d-light.d-none.d-sm-block {
display:none!important;
}
body.dark-active .t4-off-canvas-header .d-dark.d-none.d-sm-block {
display:block!important;
}
/* Mobile Ansicht Gestaltung dark/light /
/ light aktiv */
.navbar-brand.logo-image.logo-control .d-light.d-block.d-sm-none {
display:block!important;
}
.navbar-brand.logo-image.logo-control .d-dark.d-block.d-sm-none {
display:none!important;
}
/* dark aktiv */
body.dark-active .navbar-brand.logo-image.logo-control .d-light.d-block.d-sm-none {
display:none!important;
}
body.dark-active .navbar-brand.logo-image.logo-control .d-dark.d-block.d-sm-none {
display:block!important;
}
/* Desktop Ansicht Gestaltung dark/light /
/ light aktiv */
.navbar-brand.logo-image.logo-control .d-light.d-none.d-sm-block {
display:block!important;
}
.navbar-brand.logo-image.logo-control .d-dark.d-none.d-sm-block {
display:none!important;
}
/* dark aktiv */
body.dark-active .navbar-brand.logo-image.logo-control .d-light.d-none.d-sm-block {
display:none!important;
}
body.dark-active .navbar-brand.logo-image.logo-control .d-dark.d-none.d-sm-block {
display:block!important;
}
--
that's fix my bug