I want to just select the First two input and not last two. so please help me out from this and give a brief example for the not select if possible

 .converter .MainConversion input{
  display: block;
  margin: auto;
  width: 30%;
  font-size: 20px;
  padding: 3px;
  border: 0px;
  font-family: Montserrat;
  font-weight: 600;
  border-radius: 20px;
  margin-top: 10px;
  margin-bottom: 30px;
  text-align: center;
  background-color: rgb(177, 177, 177);
}

   <div >
          <div >
            <div id="displayresult">
                <h5 id="HeaderDisplay">Enter the Value</h5>
                <p id="MistakeDisplay">Enter a width and height you want to convert for