survey.css

*, ::before, ::after {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}

body {
    width: 100%;
    height: 100%;
    margin: 5em auto;
    font-family: verdana, sans-serif;
    font-size: 16px;
    background-color: #2D6A4F;
    color: #ffffff;
    accent-color: #97728D;
  }
  
  h1, p {
    margin: 0.8em auto;
    text-align: center; 
  }

  p {
    font-style: italic;
  }

  fieldset {
    width: 50%;
    padding: 2em;
    margin: 3em auto;
    line-height: 1.5em;
    border: none; 
    border-radius: 5px;
    background-color: #081C15;   
  }
  
  label {
    display: block;
  }
  
  div {
    margin: 5px 0 15px;
  }
  
  .box {
    width: 100%;
    height: 2em; 
    margin: 5px 0 15px;
    border-radius: 5px;
    border-width: 2px;
    border-color: #2D6A4F;
    background-color: #ffffff;
  }
  
  .large {
    display: block; 
    height: auto;
  }
  
  #submit {
    margin-top: 2em;
    height: 3em; 
    font-weight: bold;
    letter-spacing: 0.5px;
    color: #ffffff;
    background-color: #97728D;
  }

  @media screen and (max-width: 700px) {
      fieldset {
        width: 80%; 
      }
  }