Add Button To The Right SIde Of Input Field

<div class="input-group">
        <input type="text" name="search" class="form-control" placeholder="Search">
        <span><button type="submit" class="btn btn-primary"><i class="fa fa-copy" style="font-size:30px;"></i></button></span>
     </div>

<div class="input-group">
        <input type="text" name="search" class="form-control" placeholder="Search">
        <span><button type="submit" class="btn btn-primary"><i class="fa fa-copy" style="font-size:30px;"></i></button></span>
     </div>

<div class="input-group">
        <input type="text" name="search" class="form-control" placeholder="Search">
        <span><button type="submit" class="btn btn-primary"><i class="fa fa-copy" style="font-size:30px;"></i></button></span>
     </div>

<div class="input-group">
        <input type="text" name="search" class="form-control" placeholder="Search">
        <span><button type="submit" class="btn btn-primary"><i class="fa fa-copy" style="font-size:30px;"></i></button></span>
     </div>