Si vous jetez un oeil à la source de la page que vous verrez:
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd" [
<!ENTITY ns_flows "http://ns.adobe.com/Flows/1.0/">
<!ENTITY ns_extend "http://ns.adobe.com/Extensibility/1.0/">
<!ENTITY ns_ai "http://ns.adobe.com/AdobeIllustrator/10.0/">
<!ENTITY ns_graphs "http://ns.adobe.com/Graphs/1.0/">
<!ENTITY ns_vars "http://ns.adobe.com/Variables/1.0/">
<!ENTITY ns_imrep "http://ns.adobe.com/ImageReplacement/1.0/">
<!ENTITY ns_sfw "http://ns.adobe.com/SaveForWeb/1.0/">
<!ENTITY ns_custom "http://ns.adobe.com/GenericCustomNamespace/1.0/">
<!ENTITY ns_adobe_xpath "http://ns.adobe.com/XPath/1.0/">
]>
ce symbole dans la dernière ligne est celle que vous voyez, se débarrasser de cette terrible déclaration dOCTYPE, le remplacer par quelque chose qui fait sens et le problème est résolu ...
btw. vous n'avez pas besoin de tout ce qui a généré des déchets, vous pouvez simplement insérer cette partie dans un document HTML:
<svg version="1.1" id="Calque_1" xmlns:x="&ns_extend;" xmlns:i="&ns_ai;" xmlns:graph="&ns_graphs;"
xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:a="http://ns.adobe.com/AdobeSVGViewerExtensions/3.0/"
x="0px" y="0px" viewBox="0 0 316 316" enable-background="new 0 0 316 316" xml:space="preserve">
<g>
<path fill="#55BFD7" d="M158,0C70.7,0,0,70.7,0,158s70.7,158,158,158s158-70.7,158-158S245.3,0,158,0z M158,283
c-69,0-125-56-125-125S89,33,158,33s125,56,125,125S227,283,158,283z"/>
</g>
<g>
<path fill="#55BFD7" d="M125.2,88.8c-0.8,1.5-3.1,4.2-6.7,6.9c-10.3,7.6-20.3,5-26.5-3.4c-7.5-10.2-4.4-21.1,4.6-27.8
c3.5-2.6,6.7-3.8,8.3-4.1l2.6,6.4c-1.8,0.4-4.1,1.3-6.5,3c-5.3,3.9-7.1,10.2-2.3,16.8c4.4,6,10.7,7.1,16.7,2.7c2-1.5,4-3.6,4.9-5.1
L125.2,88.8z"/>
<path fill="#55BFD7" d="M155,63.4c2.6,11.8-2.9,20.6-13.5,23c-10.7,2.4-18.8-4.3-21.1-14.6c-2.4-10.8,2.7-20.4,13.3-22.8
C144.9,46.5,152.8,53.4,155,63.4z M129.1,69.7c1.6,7.1,6,11.3,11.5,10.1c5.5-1.2,7.5-7.2,5.9-14.2c-1.4-6.5-5.8-11.3-11.4-10.1
C129.5,56.7,127.5,62.7,129.1,69.7z"/>
<path fill="#55BFD7" d="M177.8,48.5l-5,20.7c-1.5,6.2,0.1,9.9,4.2,10.9c4.3,1,7.3-1.4,8.9-7.7l5-20.7l8.1,2l-4.9,20.1
c-2.7,11.1-9.6,15-19,12.7c-9.1-2.2-13.2-8.5-10.4-20l4.9-20L177.8,48.5z"/>
<path fill="#55BFD7" d="M215.6,62.8c2.3,1.2,5.4,3.2,9.4,6.3c4.1,3.1,6.4,6.2,7.1,9.2c0.7,2.9,0.1,6.3-2.1,9.2
c-2.2,2.9-5,4.6-8,4.9c-3.9,0.4-8-1.2-11.9-4.2c-0.9-0.7-1.6-1.3-2.2-1.9L200,96.7l-6.6-5L215.6,62.8z M212,81.1
c0.5,0.6,1.1,1.1,2.1,1.9c3.5,2.7,7.1,2.6,9.4-0.4c2.1-2.7,1.4-5.7-1.9-8.3c-1.3-1-2.4-1.6-2.9-1.8L212,81.1z"/>
</g>
<g>
<path fill="#55BFD7" d="M99.5,252.4c-1.7-0.4-4.9-1.9-8.3-4.8c-9.9-8.1-9.9-18.4-3.3-26.5c8-9.8,19.4-9.5,28-2.4
c3.4,2.7,5.3,5.5,6,7l-5.5,4.1c-0.9-1.6-2.3-3.6-4.6-5.5c-5.1-4.2-11.7-4.4-16.9,2c-4.7,5.7-4.2,12.1,1.5,16.8
c2,1.6,4.5,2.9,6.2,3.5L99.5,252.4z"/>
<path fill="#55BFD7" d="M156.3,271.6l-20.3-4.6c-1-0.2-2.1-0.3-3.4-0.4c-1.3-0.2-2.7-0.3-4.4-0.7c-12.4-2.8-16.1-12.7-13.9-22.4
c2.6-11.5,11.6-17.3,22.5-14.8c2,0.4,3.5,1,4.8,1.4c1.3,0.5,2.4,0.9,3.3,1.1l18.9,4.3l-1.5,6.7l-14.1-3.2l-1.7,7.5l13.3,3l-1.5,6.6
l-13.3-3l-1.9,8.6l14.8,3.4L156.3,271.6z M140,237c-0.9-0.7-2.3-1.3-4.1-1.7c-5.6-1.3-11.3,1.9-13.1,9.8c-1.7,7.1,1.2,13,8.1,14.6
c1.3,0.3,2.8,0.4,3.8,0.2L140,237z"/>
<path fill="#55BFD7" d="M172.3,231.1l5.9,20.4c1.8,6.1,5,8.5,9.1,7.3c4.2-1.2,5.7-4.8,3.9-11.1l-5.9-20.4l8-2.3l5.8,19.9
c3.2,11-0.8,17.8-10.1,20.5c-8.9,2.6-15.7-0.8-18.9-12.1l-5.7-19.8L172.3,231.1z"/>
<path fill="#55BFD7" d="M195.3,223.9c1.8-2,4.7-4.8,8.1-7.6c4.2-3.5,7.7-5.3,11.1-5.3c2.8,0,5.4,1.2,7.5,3.8
c3,3.7,2.4,8.3,0.7,11.2l0.1,0.1c2.7-0.8,5.3,0.2,8.2,2.2c3.5,2.5,7.5,5.5,8.9,6.2l-6.6,5.4c-1.1-0.4-3.7-2.2-7.4-5
c-3.7-2.9-5.7-2.9-8.4-0.8l-2,1.6l9.2,11.3l-6.4,5.2L195.3,223.9z M211.8,231l2.5-2.1c3.2-2.6,3.8-5.8,1.8-8.3
c-2.1-2.6-5-2.5-8-0.1c-1.6,1.3-2.4,2.1-2.8,2.6L211.8,231z"/>
</g>
<g>
<path fill="#55BFD7" d="M140.1,146.1c-1.8,0-2.9,0.2-3.6,0.3v23.2c0.7,0.2,1.8,0.2,2.8,0.2c7.2,0.1,12-3.9,12-12.4
C151.3,150,147,146.1,140.1,146.1z"/>
<path fill="#55BFD7" d="M205,122c-13-13-34-13-47,0c-13-13-34-13-47,0s-13,34,0,47l47,47l47-47C218,156.1,218,135,205,122z
M153.9,171.4c-3.7,3.1-9.4,4.6-16.3,4.6c-4.1,0-7.1-0.3-9.1-0.5v-34.8c2.9-0.5,6.8-0.7,10.8-0.7c6.7,0,11.1,1.2,14.5,3.8
c3.7,2.7,6,7.1,6,13.3C159.7,163.9,157.3,168.6,153.9,171.4z M187.6,175.6H165v-35.4h21.8v6.6H173v7.4h13v6.5h-13v8.4h14.5V175.6z"
/>
</g>
<ellipse fill="#55BFD7" cx="-265" cy="29" rx="106" ry="0"/>
</svg>
En effet, la solution était de le placer dans un document HTML. J'ai déjà essayé mais ça a fini mal ... bizarre. En tout cas, merci pour votre aide, je l'ai apprécié! – Ezhno
N'hésitez pas à marquer comme réponse acceptée si vous osez. –