@font-face {
    font-family:"DM Sans";
    font-style:  normal;
    font-weight: 400;
    src : url('./DMSans-Regular.ttf');
  }
  @font-face {
    font-family:"DM Sans Bold";
    font-style:  normal;
    font-weight: 700;
    src : url('./DMSans-Regular.ttf');
  }
  
  body {
    background: linear-gradient(to bottom right, #ffffff, #e6e6e6);
    background-repeat: no-repeat;
    background-attachment: fixed;
  }
  
  header {
    width: 100%;
    margin: auto;
    text-align: center;
  
    margin-top: 15%;
    margin-bottom: 15%;
  }
  
  header img {
    width: 60%;
    min-width: 200px;
    max-width: 500px;
    max-height: 300px;
  }
  
  section {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  header, .intro {
    font-family: "DM Sans";
  }
  
  .intro {
    font-size: 1em;
    padding: 0 10%;
    line-height: 1.2em;
    text-align: center;
  }
  
  .intro h1 {
    font-family: "DM Sans Bold";
    font-size: 1.2em;
  }
  
  .intro code {
    font-family: monospace;
    font-size: 1.1em;
    word-break: break-all;
  }
  
  .intro a, .intro a:active, .intro a:visited {
    color: #00b4e4;
    text-decoration: none;
    word-break: break-all;
  }
  
  .advice {
    width: 80%;
    margin: auto;
    margin-bottom: 15%;
    margin-top: 5em;
  
    background-color: #ffffff;
    border-radius: 1rem;
    border: 1px solid #b7b7b7;
  
    padding: 2em;
  
    font-family: "DM Sans";
    font-size: .9em;
    box-sizing: border-box;
  
    align-items: normal;
  }
  
  .advice p {
    margin-bottom: 1em;
  }
  
  .advice p:first-child {
    margin-top: 0;
  }
  
  .advice p.list-intro {
    margin: 0;
  }
  
  .advice ul {
    list-style-type: square;
    margin: 0;
    padding: 0 1em;
  }
  
  .advice ul li {
    line-height: 2em;
  }
  
  .advice p:last-child {
    margin-bottom: 0;
  }
  
  
  /* sm: 640px+ */
  @media (width >= 40rem) {
    header {
      margin-bottom: 1em;
      margin-top: 5em;
    }
  
    header img {
      width: 50%;
    }
  
    .intro h1 {
      font-size: 2em;
    }
  
    .advice {
      width: 50%;
    }
  }
  
  /* md: 768px+ */
  @media (width >= 48rem) {}
  
  /* lg: 1024px+ */
  @media (width >= 64rem) {}
  
  /* xl: 1280px+ */
  @media (width >= 80rem) {
    .intro h1 {
      font-size: 3.4em;
    }
  }
  
  /* 2xl: 1536px+ */
  @media (width >= 96rem) {
    header img {
      width: 25%;
      min-width: 200px;
      max-width: 500px;
      max-height: 300px;
    }
  
    .advice {
      width: 25%;
      min-width: 200px;
      min-width: 300px;
      max-width: 500px;
    }
  }