BMI.css

.container {
    width: 575px;
    height: 825px;
  
    background-color: #797978;
    padding-left: 30px;
  }
  #height,
  #weight {
    width: 150px;
    height: 25px;
    margin-top: 30px;
  }
  
  #weight-guide {
    margin-left: 75px;
    margin-top: 25px;
  }
  
  #results {
    font-size: 35px;
    margin-left: 90px;
    margin-top: 20px;
    color: rgb(241, 241, 241);
  }
  
  button {
    width: 150px;
    height: 35px;
    margin-left: 90px;
    margin-top: 25px;
    background-color: #fff;
    padding: 1px 30px;
    border-radius: 8px;
    color: #212121;
    text-decoration: none;
    border: 2px solid #212121;
  
    font-size: 25px;
  }
  
  h1 {
    padding-left: 15px;
    padding-top: 25px;
    
  }
  
  
/* Responsive design */

/* Tablet and larger screens */
@media only screen and (min-width: 768px) {
  .container {
    max-width: 80%;
    margin: 40px auto;
  }
  #height, #weight {
    width: 200px;
  }
  button {
    width: 200px;
  }
}

/* Mobile screens */
@media only screen and (max-width: 767px) {
  .container {
    width: 90%;
    margin: 20px auto;
    height: auto;
  }
  #height, #weight {
    width: 100%;
    margin-top: 15px;
  }
  button {
    width: 100%;
    margin-top: 15px;
  }
  #results {
    font-size: 25px;
    margin-left: 20px;
  }
  #weight-guide {
    margin-left: 20px;
  }
}