<div style="position: relative;
            z-index: 1;
            background-color: rgba(255,255,255,0.5);
            height: 100%;">

   <div style="position: absolute;
          width: 100%;
          top: 50px;
          background-color: white;
          padding: 20px;">

   <h5>Search</h5>

   </div>

</div>