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<div class="form">
<div class="container">
<div class="row">
<form method="post" action="mail.php" class="needs-validation">
<div class="form-group">
<div class="Form__Title">
<label><i class="fas fa-user fa-fw"></i>会社名<span class="badge badge-danger">必須</span></label>
<p class="is-error-会社名"></p>
</div>
<div class="Form__Item">
<input name="会社名" maxlength="100" type="text" placeholder="会社名" class="form-control form-control-md" required>
</div>
<div class="Form__Title">
<label><i class="fas fa-user fa-fw"></i>お名前<span class="badge badge-danger">必須</span></label>
<p class="is-error-お名前"></p>
</div>
<div class="Form__Item">
<input name="お名前" maxlength="100" type="text" placeholder="山田 太郎" class="form-control form-control-md" required>
</div>
<div class="Form__Title">
<label><i class="fas fa-envelope fa-fw"></i>メールアドレス<span class="badge badge-danger">必須</span></label>
<p class="is-error-メールアドレス"></p>
</div>
<div class="Form__Item">
<input name="メールアドレス" maxlength="100" type="text" placeholder="sample@co.jp" class="form-control form-control-md" required>
</div>
<div class="Form__Title">
<label><i class="fas fa-phone fa-fw"></i>電話番号<span class="badge badge-danger">必須</span></label>
<p class="is-error-電話番号"></p>
</div>
<div class="Form__Item">
<input name="電話番号" maxlength="32" type="text" placeholder="000000000" class="form-control form-control-md" required>
</div>
<div class="Form__Title">
<label><i class="fas fa-clipboard-check"></i>ご相談内容(複数選択可能 選択項目)<span class="badge badge-danger">必須</span></label>
<p class="is-error-category"></p>
</div>
<div class="Form__Item">
<div class="custom-control custom-checkbox">
<input name="ご相談内容[]" value="サービス詳細を知りたい" type="checkbox" class="custom-control-input" id="custom-check-1" required>
<label class="custom-control-label chk" for="custom-check-1">サービス詳細を知りたい</label>
</div>
<div class="custom-control custom-checkbox">
<input name="ご相談内容[]" value="費用感を知りたい" type="checkbox" class="custom-control-input" id="custom-check-2" required>
<label class="custom-control-label chk" for="custom-check-2">費用感を知りたい</label>
</div>
<div class="custom-control custom-checkbox">
<input name="ご相談内容[]" value="サービス導入について相談したい" type="checkbox" class="custom-control-input" id="custom-check-3" required>
<label class="custom-control-label chk" for="custom-check-3">サービス導入について相談したい</label>
</div>
<div class="custom-control custom-checkbox">
<input name="ご相談内容[]" value="サービスの詳細な資料がほしい" type="checkbox" class="custom-control-input" id="custom-check-4" required>
<label class="custom-control-label chk" for="custom-check-4">サービスの詳細な資料がほしい</label>
</div>
</div>
<div class="Form__Title">
<label><i class="fas fa-comments fa-fw"></i>ご相談内容詳細</label><br>
</div>
<div class="Form__Item">
<textarea name="ご相談内容詳細" class="form-control form-control-md mb-3 textarea">
</textarea>
</div>
<div class="text-center">
<input type="submit" class="btn btn-primary" value=" 送信する " />
</div>
</div>
</form>
</div>
</div>
</div>
Also see: Tab Triggers