.slider-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color:  #003b495c;/* Semi-transparent black *//* Semi-transparent black */
    z-index: 1; /* Below the arrows and text */
}
/* Gradient Overlay */
.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.8)); /* Gradient overlay */
    z-index: 1;
}

/* FlexSlider Navigation Arrows */
.flexslider .flex-direction-nav a {
    z-index: 3; /* Above the overlay and text */
}

/* FlexSlider Caption Text */
.flex-caption {
    position: relative;
    z-index: 2; /* Above the overlay but below the arrows */
}
@media only screen and (max-width: 600px){
 .arrow{
        display:none;
    }
}