Content broken bootstrap v3.3.7 with laravel v5.4 - php

Question

When refresh the page then my content broken, I couldn't understand why this happening. Some time's my whole page broken. Please help me to solve this problem.
Bootstrap v: 3.3.7
laravel v: 5.4
Here is my code:
#extends('layouts.admin-user.main')
#section('main_content')
<div class="ptb-80">
<div class="users-mang">
<div class="container">
<div class="row">
<div class="col-md-12">
#include('layouts.success')
#include('layouts.errors')
<h1>User Management</h1>
<div class="portlet-title">
<div class="caption font-dark">
#if(isset($searchData))
<a href="#if (isset($companyData->company_name)){{ url($companyData->company_name.'/user-list') }}#endif"
class="btn btn-info">Back to User List</a>
#else
<a href="#if (isset($companyData->company_name)){{ url($companyData->company_name.'/user') }}#endif"
class="btn btn-success">Add User</a>
Import User
#endif
</div>
<div class="tools"> </div>
</div>
<table class="table table-striped table-bordered table-hover" id="sample_1">
<thead>
<tr>
<th>#</th>
<th>Name</th>
<th>Email</th>
<th>Phone</th>
<th>Group</th>
<th>Action</th>
</tr>
</thead>
<tbody>
#if(isset($allData) && !$allData->isEmpty())
<?php $i = 0; ?>
#foreach($allData as $data)
<?php $i++; ?>
<tr>
<td>{{ $i }}</td>
<td>{{ $data->name }}</td>
<td>{{ $data->email }}</td>
<td>{{ $data->phone }}</td>
<td>{{ $data->group_id }}</td>
<td>
<a href="#if (isset($companyData->company_name)){{ url($companyData->company_name.'/user/contact/'.$data->id) }}#endif"
class="btn btn-info">Contact</a>
<a href="#if (isset($companyData->company_name)){{ url($companyData->company_name.'/user/edit/'.$data->id) }}#endif"
class="btn btn-primary">Edit</a>
<a href="#if (isset($companyData->company_name)){{ url($companyData->company_name.'/user/delete/'.$data->id) }}#endif"
onclick="return confirm('Are you sure?')"
class="btn btn-danger">Delete</a>
</td>
</tr>
#endforeach
#else
<tr>
<td colspan="6" class="text-center"> No available data.</td>
</tr>
#endif
</tbody>
</table>
</div>
</div>
</div>
</div>
</div>
#endsection
Here is a broken content screenshot:
Thanks so much.