How to put scroll down button on a slider?

Hi,I would like to put a scroll down button at the bottom of the slider part of my website.

Here is my slider part:

<section id="slider" class="slider-element slider-parallax swiper_wrapper full-screen clearfix" data-autoplay="5000" data-speed="650" data-loop="true">
    <div class="slider-parallax-inner">
        <div class="swiper-container swiper-parent">
            <div class="swiper-wrapper">

                <div class="swiper-slide dark">
                    <div class="container clearfix">
                        <div class="slider-caption slider-caption-center" style="max-width: 750px">
                            <h2 data-animate="fadeInUp" class="d-none d-md-block">Title</h2>
                            <h2 data-animate="fadeInUp" class="d-block d-md-none" style="font-size: 1rem">Title</h2>
                            <p class="d-none d-sm-block" data-animate="fadeInUp" data-delay="200">Text</p>
                            <a href="#videoSection" class="button button-border button-rounded button-reveal tright button-large topmargin d-none d-md-inline-block" data-animate="fadeInUp" data-delay="400"><i class="icon-angle-right"></i><span>Look</span></a>
                            <a href="#videoSection" class="button button-border button-rounded button-reveal tright button-small topmargin-sm d-inline-block d-md-none" data-animate="fadeInUp" data-delay="400"><i class="icon-angle-right"></i><span>Look</span></a>
                        </div>
                    </div>
                    <div class="video-wrap">
                        <video poster="/assets/images/videos/explore.jpg" preload="auto" loop autoplay muted>
                            <source src='/assets/images/videos/slider-2-2.mp4' type='video/mp4' />
                            <source src='/assets/images/videos/slider-2-2.webm' type='video/webm' />
                        </video>
                        <div class="video-overlay" style="background-color: rgba(0,0,0,0.55);"></div>
                    </div>
                </div>

                <div class="swiper-slide dark" style="background-image: url('/assets/images/slider/4-1.jpg'); background-position: center top;">
                    <div class="container clearfix">
                        <div class="slider-caption" style="max-width: 650px">
                            <h2 data-animate="fadeInUp" class="d-none d-md-block" style="font-size: 2.7rem; color: #222222">Title</h2>
                            <h2 data-animate="fadeInUp" class="d-block d-md-none" style="font-size: 1rem; color: #222222">Title</h2>
                            <p class="d-none d-sm-block" data-animate="fadeInUp" data-delay="200" style="font-size: 1rem;color: #222222">Text</p>
                            <a href="/about-us" class="button button-border button-rounded button-reveal tright button-large d-none d-md-inline-block button-white button-light" data-animate="fadeInUp" data-delay="400" style="color: #222222"><i class="icon-angle-right"></i><span>Look</span></a>
                            <a href="/about-us" class="button button-border button-rounded button-reveal tright button-small topmargin-sm d-inline-block d-md-none button-white button-light" data-animate="fadeInUp" data-delay="400" style="color: #222222"><i class="icon-angle-right"></i><span>Look</span></a>
                            <div class="clear"></div>
                            <div class="col_two_third topmargin-sm d-none d-sm-block" style="max-width:30%" data-animate="fadeInUp" data-delay="400"><img src="/assets/images/slider/webhelp-logo.png"></div>
                        </div>
                    </div>
                </div>

            </div>
            <div class="slider-arrow-left"><i class="icon-angle-left"></i></div>
            <div class="slider-arrow-right"><i class="icon-angle-right"></i></div>
            <div class="slide-number"><div class="slide-number-current"></div><span>/</span><div class="slide-number-total"></div></div>
        </div>
    </div>
</section>

How can I add it?