Charabia de style dans e-mail HTML

Salut !

J'ai fait un envoi de test d'un e-mail formaté en HTML. Seulement sur certainement boites, avant le message, apparait tout un charabia de style (que je comprends en partie), alors que dans d'autres il n'apparait pas. Il ne correspond pas au code ni au CSS du message.

Quelqu'un a t il une idée de comment faire en sorte qu'il n'y ai pas ce genre de trucs ? Merci!

v\:* { BEHAVIOR: url(#default#VML) } o\:* { BEHAVIOR: url(#default#VML) } w\:* { BEHAVIOR: url(#default#VML) } .shape { BEHAVIOR: url(#default#VML) } st1\:* { BEHAVIOR: url(#default#ieooui) } @font-face { font-family: Wingdings; } @font-face { font-family: Tahoma; } @page Section1 {size: 595.3pt 841.9pt; margin: 70.85pt 70.85pt 70.85pt 70.85pt; mso-header-margin: 35.4pt; mso-footer-margin: 35.4pt; mso-paper-source: 0; } P.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; mso-style-parent: ""; mso-pagination: widow-orphan; mso-fareast-font-family: "Times New Roman" } LI.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; mso-style-parent: ""; mso-pagination: widow-orphan; mso-fareast-font-family: "Times New Roman" } DIV.MsoNormal { FONT-SIZE: 12pt; MARGIN: 0cm 0cm 0pt; FONT-FAMILY: "Times New Roman"; mso-style-parent: ""; mso-pagination: widow-orphan; mso-fareast-font-family: "Times New Roman" } A:link { COLOR: blue; TEXT-DECORATION: underline; text-underline: single } SPAN.MsoHyperlink { COLOR: blue; TEXT-DECORATION: underline; text-underline: single } A:visited { COLOR: blue; TEXT-DECORATION: underline; text-underline: single } SPAN.MsoHyperlinkFollowed { COLOR: blue; TEXT-DECORATION: underline; text-underline: single } SPAN.StyleCourrierlectronique17 { COLOR: navy; FONT-FAMILY: Arial; mso-style-type: personal-reply; mso-style-noshow: yes; mso-ansi-font-size: 10.0pt; mso-bidi-font-size: 10.0pt; mso-ascii-font-family: Arial; mso-hansi-font-family: Arial; mso-bidi-font-family: Arial } SPAN.SpellE { mso-style-name: ""; mso-spl-e: yes } SPAN.GramE { mso-style-name: ""; mso-gram-e: yes } DIV.Section1 { page: Section1 } OL { MARGIN-BOTTOM: 0cm } UL { MARGIN-BOTTOM: 0cm }