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HTML 

              
                <body>
  <main>
    <h1>L'interMEDIAire</h1>
    <h2>Titre 2</h2>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quibusdam ipsam delectus sapiente officia temporibus quam dolorum nam iusto asperiores vitae, quia, ratione hic quod vel unde quae tempore a in.Earum sapiente cupiditate ducimus amet quo provident! Adipisci eaque ducimus incidunt tempora ipsa? Iusto, repellat aliquam reprehenderit fugit! Perspiciatis, reprehenderit quisquam excepturi!</p>
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ipsum velit nam illo molestiae earum, distinctio recusandae omnis eius soluta. Saepe asperiores libero modi est eum rem aliquid dolorum laudantium magnam.</p>
    <br><br>
          <button onclick="goPDF('Merlin','Ipsum','29/01/2022')">Donwload on pdf</button>
  </main>
</body>
!

CSS 

              
                /*COULEURS*/
$noir:        rgba(0,0,0,1);
$noirfonce:   rgba(29,31,32,1);
$noiropaque:  rgba(29,31,32,.9);
$rose:        rgba(152,38,114,1);
$bleu:        rgba(128,155,189,1);
$blanc:       rgba(255,255,255,1);
$gris:        rgba(55,55,55,1);
$gris2:       rgba(255,255,255,.8);
$gris3:       rgba(204,204,204,1);
$padding:     20px 10px;

/*TOUS LES ELEMENTS*/
*,*:after,*:before {
  box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-box-sizing: border-box;
}

body {
  margin: 0px auto;
  width: 640px;
  background: $noir;
  color: $blanc;
  font-size: 1em;
  padding: $padding;
}

main {
  padding: $padding;
  background: $noirfonce;
}

a {
  color: $bleu;
  text-decoration: none;
  transition: all .3s ease-in-out;
}

a:hover,a:active {
  color: $blanc
}

h1 {
  margin: 0;
  padding: 0;
  font-size: 1.4em;
  color: $bleu;
}

h2 {
  margin-top: 15px;
  width: 100%;
  color: $rose;
}

h3 {
  display: inline-block;
  margin: 10px 0px;
  color: $gris2;
  text-transform: uppercase;
}

h1,h2,h3 {
  font-family: 'Inconsolata', monospace;
}

p {
  opacity: .85;
  color: $gris2;
  line-height: 1.6em;
}

ul {
  margin: 0;
  padding: 0;
  color: $gris3;
  list-style: none;
}

button {
  background: $noir;
  border: none;
  display: block;
  padding: 10px 15px;
  line-height: 150%;
  color: $blanc;
  cursor: pointer;
  &:hover,
  &:active {
    background: $rose;
  }
}
/*www.lintermediaire.be*/
!

JS 

              
                function goPDF(prenom,nom,date) {

var dynamicContent = 'Par la présente, nous attestons que '+prenom+' '+nom+' est l\'auteur du site web lintermediaire.be.\n\nCet article a été publié le '+date+'.\n\n';

/*FONTS*/
pdfMake.fonts = {
  Roboto: {
    normal: 'https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.66/fonts/Roboto/Roboto-Regular.ttf',
    bold: 'https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.66/fonts/Roboto/Roboto-Medium.ttf',
    italics: 'https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.66/fonts/Roboto/Roboto-Italic.ttf',
    bolditalics: 'https://cdnjs.cloudflare.com/ajax/libs/pdfmake/0.1.66/fonts/Roboto/Roboto-MediumItalic.ttf'
  }
};

pdfMake.createPdf({
  
 /* TEXT EN ARRIERE PLAN */
watermark: { text: 'L\'interMEDIAire', color: 'grey', opacity: 0.3, bold: true, italics: false, fontSize: 52,
},

/* BACKGROUND */
background: function (page) {
  if (page !== 2) {
    return [
    {
      image: 'lintermediaire',
    }
    ];
  }
},
images: {
        lintermediaire: 'https://picsum.photos/1280/80'
  /*
    lintermediaire: 'data:image/png;base64,!!!',
  */
},

/* TEXTS */
content: [
  
{ text: 'L\'interMEDIAire, le 29 janvier 2022.\n\n', style: 'right', margin: [40,60,40,20]},

{
  text: [
  '',
  { text: 'Concerne', bold: true, decoration: 'underline' },
  ' : Test de Make PDF js.\n\n'
  ],
  style: 'paragraf',margin: [40,0,40,0]
},

{
  text: [
  'Cette page a été rédigée par ',
  { text: ''+prenom+' '+nom+'', bold: true },
  '. La date de sa mise en ligne est le : ',
  { text: ''+date+'', bold: true },
  '.\n\n'
  ],
  style: 'paragraf',margin: [40, 10]
},

{ text: 'Réalisé par lintermediaire.be\n\n', style: 'right',  margin: [40,0,40,20]},

],

/* STYLES */
styles: {
  paragraf: {
    alignment: 'left'
  },

  right: {
    italics: true,
    alignment: 'right'
  }
}

})
.download('lintermediaire.pdf');
}
!
999px

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