div.owl-carousel.owl-testimonial .testimonial {
border: 1px solid; 
padding: 30px; 
border-radius: 20px; 
margin-top: 25px;
}
div.owl-carousel.owl-testimonial .testimonial::before {
content: ''; 
position: absolute;
z-index: 1;
left: 5vw;
top: -25px;
width: 50px;
height: 50px;
background-image: url(https://norms.in/wp-content/themes/norms/images/quotes.png); 
background-size: cover; 
background-repeat: no-repeat;
}
div.testimonial p {
margin-top: 35px;
}