Demo
HTML&CSS
<div class="form_user1">
<form action="" method="post">
<p>会員ID</p>
<input type="text" name="user_id">
<p>パスワード</p>
<input type="password" name="password">
<p>郵便番号</p>
<input type="text" name="post_number">
<p>ご住所</p>
<input type="text" name="address">
<p>お名前</p>
<input type="text" name="name">
<p>携帯電話番号</p>
<input type="text" name="tel">
<p>メールアドレス</p>
<input type="text" name="e_mail">
<button type="submit" name="button" value="confirm">確認</button>
</form>
</div>
.form_user1{
width: 80%;
text-align: left;
margin-left: auto;
margin-right: auto;
padding: 2rem;
border: 1px solid #ccc;
}
.form_user1 p{
margin-top: 1rem;
}
.form_user1 input{
display: block;
width: 98%;
height: 2rem;
outline: none;
padding-left: 0.5rem;
margin-top: 0.2rem;
border: 1px solid #ccc;
}
.form_user1 button{
display: block;
cursor: pointer;
outline: none;
padding: 1rem 2rem;
margin-top: 2rem;
margin-left: auto;
margin-right: auto;
border: 1px solid #ccc;
}