Glitch with testimonial element

Hi there Enfold team!

I used the code below to set a specific height to the testimonial section regardless of how long the text is. It works perfectly, unfortunately there’s a weird navigational arrow appearing on the top left portion of the testimonial slider.

http://prntscr.com/gw5u14

Can you look into this? Thank you so much!

#top .avia-slider-testimonials.avia-testimonial-wrapper {
height: auto!important;
min-height: 200px !important;
max-height: 200px !important;
}

/* For ipad/tablet in portrait mode */
@media only screen and (max-width:960px) and (min-width:768px) {
#top .avia-slider-testimonials.avia-testimonial-wrapper {
min-height: 400px !important;
max-height: 400px !important;
}
}

/* For mobile devices */
@media only screen and (max-width:767px) {
#top .avia-slider-testimonials.avia-testimonial-wrapper {
min-height: 600px !important;
max-height: 600px !important;
}
}