<section class="third-section">
<div class="container">
  <div class="row">
    <div class="col-md-4 col-xs-4 d-flex justify-content-start">
      <h4>Entre em contato com a gente:</h4>
    </div>

    <div class="col-md-4 col-xs-4 phone">
      <div class="d-flex align-items-center resd">
        <p> 51 9999999</p>
      </div>
      <div class="d-flex align-items-center"><img src="img/iconwpp.png" alt="icone whatsapp">
        <p>51 99999999</p>
      </div>
      <div class="d-flex align-items-center"><img src="img/iconwpp.png" alt="icone whatsapp">
        <p>51 99999999</p>
      </div>
    </div>

    <div class="col-md-4 col-xs-4 address">
      <p>Rua XXXXX</p>
      <p>xxxxxxxxxxxxx/RS</p>
      <p>CEP 00000-000</p>
    </div>
  </div>
</div>

.third-section {
margin-top: 5%;
margin-bottom: 5%;
padding-left: 35%;
padding-right: 30%;

.phone {
img {
  margin-right: 3px;
  margin-bottom: 20px;
  height: 20px;
}
.resd {
  margin-left: 23px;
 }
}