Responsive height

How about, I'm working on a web page, which must be necessarily responsive, the problem is that with my design, it looks good on only some devices, and I want opinions on how to give height or how to model my design. div so that they are fully responsive. The detail is in that I have generic classes that I use over several sections and in those sections the text is not the same, so I suppose it also generates problems. I would like help to define heights or remove them and use other types of attributes, then I leave the scss and the html

<section class="divided-contact">
<div class="side-right2">
  <div class="side-right-wrapper-contact">
    <form class="contact-form">
      <fieldset class="contact-field">
        <h4 class="contact-h4">Contacto</h4>
        <input class="contact-input" type="text" name="name" placeholder="Nombre">
        <input class="contact-input" type="text" name="email" placeholder="e-mail">
        <div class="button-division">
          <input  class="contact-phone" type="text" name="phone" placeholder="Teléfono">
          <input class="contact-button" type="submit" name="enviar" value="ENVIAR">
        </div>
      </fieldset>
    </form>
  </div>
</div>
<div class="side-left4">
  <div class="side-left-wrapper4">
    <h2 class="side-left-title4">¿Quieres integrarte a nuestro equipo?</h2>
    <p class="divided-paragraph4">Somos una empresa en crecimiento, joven y muy comprometida, que se inspira y motiva ante nuevos retos; que es conocedora del sector en el que trabaja y de las necesidades de quienes requieren de productos y de un buen servicio competente y comprometido.</p>
    <a href="contact.html">
    <input  class="contact-new-button" type="submit" name="#" value="ME INTERESA">      
    </a>
  </div>
</div>

.divided-contact{
  height: 30vw;
  background-color: $blueText;

@include small {
  height: 200vw;      
}

.side-left4{
float: right;
font-family: Raleway-Regular;
position: relative;
width: 50%; 
height: 30vw; 

@include small{
  width: 100%;
  height: 50%;
}
}

.side-left-wrapper4{       
    color: $blueText;
    width: 68%;
    left: 50%;
    position: absolute;
    top: 50%;
    transform: translate(-50%, -50%);

    @include small{
    height: 100%;
    width: 100%;
    text-align: center;
    padding: 50px 0;
  }

  .side-left-title4{
    font-size: 3.6em;
    text-align: left;
    font-family: Raleway-Regular;
    color: $white;    
    line-height: 35px;
    width: 60%;
    font-weight: bold;  
    margin-bottom: 10px;  

    @include small{
      margin: auto;
      text-align: center;
      width: 70%;
    }
  }

  .divided-paragraph4{
  color: $white;
  font-size: 1.5em;
  font-family: Raleway-Regular;
  line-height: 18px;
  font-weight: 500;
  margin: 0;
  width: 75%;

  @include small{
  margin: auto;
  font-size: 2.0em;
    }
  }

  .contact-new-button{
    border: 2px solid $white;
    padding: 13px;
    width: 30%;
    background-color: $blueText;
    color: $white;
    border-radius: 100px;
    font-size: 1.3em;
    line-height: 15px;
    text-align: center;
    font-family: Raleway-Regular;
    font-weight: 500;
    margin-top: 20px;

    @include small{
      min-width: 50%;
      font-size: 2.0em;
    }

    &:hover{
      background-color: $white;
      color: $blueText;
      cursor: pointer;
      font-family: Raleway-Semibold;
      font-weight: bold;
    }
  }
}



.side-right2 {
  float: left;
  font-family: Raleway-Regular;
  position: relative;
  width: 50%; 
  height: 30vw;

@include small {
  width: 100%;
  height: 50%;  
}   }

.side-right-wrapper-contact {
 height: 100%;
 width: 100%;
 background-image: url("../assets/images/Contacto.jpg");
 background-repeat: no-repeat;
 background-position: center;
 background-size: cover;

 @include small{
  height: 100%;
  padding: 50px 0;
 }

 .contact-form{
   height: 100%;      
   padding: 100px 0;

  @include small{
    width: 100%;
    height: 100%;
    padding: 0;
  }

  .contact-field{
    background-color: $white;
    font-family: Raleway-Semibold;
    border-radius: 20px;
    border: none;
    width: 80%;
    margin: auto;
    width: 80%;

    @include small{
      width: 100%;
      height: 100%;
    }

    .contact-h4{
      color: $blueText;
      width: 100%;
      text-align: center;
      font-family: Raleway-Semibold;
      line-height: 24px;
      font-size: 3.0em;
      font-weight: bold;
      margin: auto;
      display: block;
      padding: 12px;
      margin-top: 10px;
    }

    .contact-input{
      width: 98%;
      border: 1px solid $grayTitles;
      border-radius: 100px;
      background-color: $white;
      color: $grayTitles;
      font-family: Raleway-Regular;
      font-size: 1.5em;
      line-height: 32px;
      padding: 5px;
      margin: 5px;
    }

    .button-division{
      width: 100%;
      display: inline-block;

      @include small{
        width: 100%;
        height: 0;
        float: left;
      }

      .contact-phone{
        border: 1px solid $grayTitles;
        border-radius: 100px;
        background-color: $white;
        color: $grayTitles;
        font-family: Raleway-Regular;
        font-size: 1.5em;
        line-height: 32px;
        padding: 5px;
        margin: 5px;
        width: 50%;
        margin-bottom: 38px;

        @include small{
          width: 56%;
          margin: 5px 0 0 5px;
        }
      }

      .contact-button{
        background-color: $white;
        color: $blueText;
        border-radius: 100px;
        border: 2px solid $blueText;
        font-family: Raleway-Regular;
        font-size: 1.3em;
        text-align: center;
        line-height: 15px;
        width: 42%;
        padding: 10px;
        margin: auto auto auto 26px;

        @include small{
          width: 40%;
          margin: auto;
        }

        &:hover{
          background-color: $blueText;
          color: $white;
          cursor: pointer;
          font-family: Raleway-Semibold;
          font-weight: bold;
         }
        }
      }        
    }
   }
  }
}