I am currently using bootsrap to create a slider that is responsive for phones. However, I have noticed that the texture on the picture becomes invisible when viewed in phone mode. Is there a specific bootstrap code that can be used to address this issue?
<div class="carousel-item active" style="background-image: url('img/bg1.png')">
<div class="carousel-caption d-none d-md-block">
<h3>First Slide</h3>
<p>This is a description for the first slide.</p>
</div>
</div>