Bootstrap snippet and html example. bs4 sign up page

<div class="container h-100">
    		<div class="row h-100">
				<div class="col-sm-10 col-md-8 col-lg-6 mx-auto d-table h-100">
					<div class="d-table-cell align-middle">

						<div class="text-center mt-4">
							<h1 class="h2">Get started</h1>
							<p class="lead">
								Start creating the best possible user experience for you customers.
							</p>
						</div>

						<div class="card">
							<div class="card-body">
								<div class="m-sm-4">
									<form>
										<div class="form-group">
											<label>Name</label>
											<input class="form-control form-control-lg" type="text" name="name" placeholder="Enter your name">
										</div>
										<div class="form-group">
											<label>Company</label>
											<input class="form-control form-control-lg" type="text" name="company" placeholder="Enter your company name">
										</div>
										<div class="form-group">
											<label>Email</label>
											<input class="form-control form-control-lg" type="email" name="email" placeholder="Enter your email">
										</div>
										<div class="form-group">
											<label>Password</label>
											<input class="form-control form-control-lg" type="password" name="password" placeholder="Enter password">
										</div>
										<div class="text-center mt-3">
											<a href="index.html" class="btn btn-lg btn-primary">Sign up</a>
											<!-- <button type="submit" class="btn btn-lg btn-primary">Sign up</button> -->
										</div>
									</form>
								</div>
							</div>
						</div>

					</div>
				</div>
			</div>
		</div>

body{
    margin-top:20px;
    background-color: #f2f3f8;
}
.card {
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 15px 1px rgba(52,40,104,.08);
}

.card {
    position: relative;
    display: -ms-flexbox;
    display: flex;
    -ms-flex-direction: column;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: #fff;
    background-clip: border-box;
    border: 1px solid #e5e9f2;
    border-radius: .2rem;
}