html
                 <div class="dropdown">

  <img src="/images/register-site.png"  width="100" height="50">

  <div class="dropdown-content">
    <img src="/images/register-site.png"  width="300" height="200">
    <div class="desc">طراحی سایت</div>
  </div>

</div>
 
            

        
css
                 .dropdown {
  display: inline-block;
  padding-left: 50px;
}

.dropdown-content {
  display: none;
  position: absolute;
  background-color: #f9f9f9;
  min-width: 160px;
  box-shadow: 0px 8px 16px 0px rgba(0,0,0,0.2);
  z-index: 1;
}

.dropdown:hover .dropdown-content {
  display: block;
}

.desc {
  padding: 15px;
  text-align: center;
}
 
            

            
js