<div class="social-media">
  <div class="row grid-gutter-0">
    <div class="col-lg-3 col-6">
      <div class="overlay-container">
        <span class="overlay overlay--visible">
          <a class="overlay-target-link" href="#"></a>
          <span class="overlay-caption-container">
            <a href="#" class="overlay-caption overlay-caption--black">OUR BLOG</a>
          </span>
        </span>
        <img src="https://mttprojects.s3.amazonaws.com/demo.morethanthemes.com/conferenceplus/placeholders/social-media-1.jpg" alt="">
      </div>
    </div>
    <div class="col-lg-3 col-6">
      <div class="overlay-container">
        <span class="overlay overlay--visible">
          <a class="overlay-target-link" href="#"></a>
          <span class="overlay-caption-container">
            <a href="#" class="overlay-caption overlay-caption--black">INSTAGRAM</a>
          </span>
        </span>
        <img src="https://mttprojects.s3.amazonaws.com/demo.morethanthemes.com/conferenceplus/placeholders/social-media-2.jpg" alt="">
      </div>
    </div>
    <div class="col-lg-3 col-6">
      <div class="overlay-container">
        <span class="overlay overlay--visible">
          <a class="overlay-target-link" href="#"></a>
          <span class="overlay-caption-container">
            <a href="#" class="overlay-caption overlay-caption--black">YOUTUBE</a>
          </span>
        </span>
        <img src="https://mttprojects.s3.amazonaws.com/demo.morethanthemes.com/conferenceplus/placeholders/social-media-3.jpg" alt="">
      </div>
    </div>
    <div class="col-lg-3 col-6">
      <div class="overlay-container">
        <span class="overlay overlay--visible">
          <a class="overlay-target-link" href="#"></a>
          <span class="overlay-caption-container">
            <a href="#" class="overlay-caption overlay-caption--black">FACEBOOK</a>
          </span>
        </span>
        <img src="https://mttprojects.s3.amazonaws.com/demo.morethanthemes.com/conferenceplus/placeholders/social-media-4.jpg" alt="">
      </div>
    </div>
  </div>
</div>