<form class="form-inline">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form><nav class="navbar navbar-light bg-light">
<form class="form-inline">
<input class="form-control mr-sm-2" type="search" placeholder="Search" aria-label="Search">
<button class="btn btn-outline-success my-2 my-sm-0" type="submit">Search</button>
</form>
</nav><div class="input-group">
<div class="form-outline">
<input id="search-input" type="search" id="form1" class="form-control" />
<label class="form-label" for="form1">Search</label>
</div>
<button id="search-button" type="button" class="btn btn-primary">
<i class="fas fa-search"></i>
</button>
</div><div class="input-group mb-3">
<input type="text" class="form-control" placeholder="Search" aria-label="Search" aria-describedby="basic-addon2">
<div class="input-group-append">
<span class="input-group-text" id="basic-addon2">Search/span>
</div>
</div><div class="input-group">
<input type="search" class="form-control rounded" placeholder="Search" aria-label="Search" aria-describedby="search-addon" />
<button type="button" class="btn btn-outline-primary">search</button>
</div>