Le problème est le `\hspace{2em}` dans le premier tableau. Cela commence une nouvelle ligne. \documentclass[french,a4paper]{scrartcl} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage{tabularx} \usepackage{booktabs} \usepackage{babel} \frenchsetup{AutoSpacePunctuation,ThinColonSpace,INGuillSpace,InnerGuillSingle,SuppressWarning} %espaces ?;:!«» \begin{document} \begin{tabularx}{0.45\textwidth}{ccrrr} \toprule Dimensions & \multicolumn{2}{c}{Format} \\ \midrule 3952 × 1824 & 13:6 & 2.16667 \\ 2340 × 1080 & 13:6 & 2.16667 \\ \midrule 3840 × 2160 & 16:9 & 1.77778 \\ 2688 × 1512 & 16:9 & 1.77778 \\ 640 × 360 & 16:9 & 1.77778 \\ \midrule 3264 × 2448 & 4:3 & 1.333 \\ 3200 × 2400 & 4:3 & 1.333 \\ 320 × 240 & 4:3 & 1.333 \\ 240 × 320 & 4:3 & 1.333\\ \midrule 2976 × 2976 & 1:1 & 1 \\ 1080 × 1080 & 1:1 & 1 \\ \midrule 2880 × 2156 & 720:539 & \footnotesize{$1.3358$} \\ \midrule 3952 × 1824 & 13:6 & \footnotesize{$2.167$} \\ 2340 × 1080 & 13:6 & \footnotesize{$2.167$} \\ \midrule 1280 × 768 & 5:3 & 1.6667 \\ 800 × 480 & 5:3 & 1.6667 \\ \midrule 1024 × 738 & 512:369 & 1.3875 \\ \midrule 864:480 & 9:5 & 1.8\\ \midrule 720:480 & 3:2 & 1.5 \\ \midrule 640:400 & 8:5 & 1.6\\ \midrule 352:288 & 11:9 & 1.222 \\ 176:144 & 11:9 & 1.222 \\ \bottomrule %\hspace{2em} \end{tabularx} \hfill \begin{tabularx}{0.45\textwidth}{ccrrr} \toprule Dimensions & \multicolumn{2}{c}{Format} \\ \midrule 3952 × 1824 & 13:6 & 2.16667 \\ 2340 × 1080 & 13:6 & 2.16667 \\ \midrule 3840 × 2160 & 16:9 & 1.77778 \\ 2688 × 1512 & 16:9 & 1.77778 \\ 640 × 360 & 16:9 & 1.77778 \\ \midrule 3264 × 2448 & 4:3 & 1.333 \\ 3200 × 2400 & 4:3 & 1.333 \\ 320 × 240 & 4:3 & 1.333 \\ 240 × 320 & 4:3 & 1.333\\ \midrule 2976 × 2976 & 1:1 & 1 \\ 1080 × 1080 & 1:1 & 1 \\ \midrule 2880 × 2156 & 720:539 & \footnotesize{$1.3358$} \\ \midrule 3952 × 1824 & 13:6 & \footnotesize{$2.167$} \\ 2340 × 1080 & 13:6 & \footnotesize{$2.167$} \\ \midrule 1280 × 768 & 5:3 & 1.6667 \\ 800 × 480 & 5:3 & 1.6667 \\ \midrule 1024 × 738 & 512:369 & 1.3875 \\ \midrule 864:480 & 9:5 & 1.8\\ \midrule 720:480 & 3:2 & 1.5 \\ \midrule 640:400 & 8:5 & 1.6\\ \midrule 352:288 & 11:9 & 1.222 \\ 176:144 & 11:9 & 1.222 \\ \bottomrule \end{tabularx} \end{document}\end{document} ![alt text][1] [1]: https://texnique.fr/osqa/upfiles/Screenshot_2024-05-29_at_14.45.54.png

Le problème est le `\hspace{2em}` dans le premier tableau. Cela commence une nouvelle ligne. \documentclass[french,a4paper]{scrartcl} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage{tabularx} \usepackage{booktabs} \usepackage{babel} \frenchsetup{AutoSpacePunctuation,ThinColonSpace,INGuillSpace,InnerGuillSingle,SuppressWarning} %espaces ?;:!«» \begin{document} \begin{tabularx}{0.45\textwidth}{ccrrr} \toprule Dimensions & \multicolumn{2}{c}{Format} \\ \midrule 3952 × 1824 & 13:6 & 2.16667 \\ 2340 × 1080 & 13:6 & 2.16667 \\ \midrule 3840 × 2160 & 16:9 & 1.77778 \\ 2688 × 1512 & 16:9 & 1.77778 \\ 640 × 360 & 16:9 & 1.77778 \\ \midrule 3264 × 2448 & 4:3 & 1.333 \\ 3200 × 2400 & 4:3 & 1.333 \\ 320 × 240 & 4:3 & 1.333 \\ 240 × 320 & 4:3 & 1.333\\ \midrule 2976 × 2976 & 1:1 & 1 \\ 1080 × 1080 & 1:1 & 1 \\ \midrule 2880 × 2156 & 720:539 & \footnotesize{$1.3358$} \\ \midrule 3952 × 1824 & 13:6 & \footnotesize{$2.167$} \\ 2340 × 1080 & 13:6 & \footnotesize{$2.167$} \\ \midrule 1280 × 768 & 5:3 & 1.6667 \\ 800 × 480 & 5:3 & 1.6667 \\ \midrule 1024 × 738 & 512:369 & 1.3875 \\ \midrule 864:480 & 9:5 & 1.8\\ \midrule 720:480 & 3:2 & 1.5 \\ \midrule 640:400 & 8:5 & 1.6\\ \midrule 352:288 & 11:9 & 1.222 \\ 176:144 & 11:9 & 1.222 \\ \bottomrule %\hspace{2em} \end{tabularx} \hfill \begin{tabularx}{0.45\textwidth}{ccrrr} \toprule Dimensions & \multicolumn{2}{c}{Format} \\ \midrule 3952 × 1824 & 13:6 & 2.16667 \\ 2340 × 1080 & 13:6 & 2.16667 \\ \midrule 3840 × 2160 & 16:9 & 1.77778 \\ 2688 × 1512 & 16:9 & 1.77778 \\ 640 × 360 & 16:9 & 1.77778 \\ \midrule 3264 × 2448 & 4:3 & 1.333 \\ 3200 × 2400 & 4:3 & 1.333 \\ 320 × 240 & 4:3 & 1.333 \\ 240 × 320 & 4:3 & 1.333\\ \midrule 2976 × 2976 & 1:1 & 1 \\ 1080 × 1080 & 1:1 & 1 \\ \midrule 2880 × 2156 & 720:539 & \footnotesize{$1.3358$} \\ \midrule 3952 × 1824 & 13:6 & \footnotesize{$2.167$} \\ 2340 × 1080 & 13:6 & \footnotesize{$2.167$} \\ \midrule 1280 × 768 & 5:3 & 1.6667 \\ 800 × 480 & 5:3 & 1.6667 \\ \midrule 1024 × 738 & 512:369 & 1.3875 \\ \midrule 864:480 & 9:5 & 1.8\\ \midrule 720:480 & 3:2 & 1.5 \\ \midrule 640:400 & 8:5 & 1.6\\ \midrule 352:288 & 11:9 & 1.222 \\ 176:144 & 11:9 & 1.222 \\ \bottomrule \end{tabularx} \end{document}

\documentclass[french,a4paper]{scrartcl} \usepackage[utf8]{inputenc} \usepackage[T1]{fontenc} \usepackage{tabularx} \usepackage{booktabs} \usepackage{babel} \frenchsetup{AutoSpacePunctuation,ThinColonSpace,INGuillSpace,InnerGuillSingle,SuppressWarning} %espaces ?;:!«» \begin{document} \begin{tabularx}{0.45\textwidth}{ccrrr} \toprule Dimensions & \multicolumn{2}{c}{Format} \\ \midrule 3952 × 1824 & 13:6 & 2.16667 \\ 2340 × 1080 & 13:6 & 2.16667 \\ \midrule 3840 × 2160 & 16:9 & 1.77778 \\ 2688 × 1512 & 16:9 & 1.77778 \\ 640 × 360 & 16:9 & 1.77778 \\ \midrule 3264 × 2448 & 4:3 & 1.333 \\ 3200 × 2400 & 4:3 & 1.333 \\ 320 × 240 & 4:3 & 1.333 \\ 240 × 320 & 4:3 & 1.333\\ \midrule 2976 × 2976 & 1:1 & 1 \\ 1080 × 1080 & 1:1 & 1 \\ \midrule 2880 × 2156 & 720:539 & \footnotesize{$1.3358$} \\ \midrule 3952 × 1824 & 13:6 & \footnotesize{$2.167$} \\ 2340 × 1080 & 13:6 & \footnotesize{$2.167$} \\ \midrule 1280 × 768 & 5:3 & 1.6667 \\ 800 × 480 & 5:3 & 1.6667 \\ \midrule 1024 × 738 & 512:369 & 1.3875 \\ \midrule 864:480 & 9:5 & 1.8\\ \midrule 720:480 & 3:2 & 1.5 \\ \midrule 640:400 & 8:5 & 1.6\\ \midrule 352:288 & 11:9 & 1.222 \\ 176:144 & 11:9 & 1.222 \\ \bottomrule %\hspace{2em} \end{tabularx} \hfill \begin{tabularx}{0.45\textwidth}{ccrrr} \toprule Dimensions & \multicolumn{2}{c}{Format} \\ \midrule 3952 × 1824 & 13:6 & 2.16667 \\ 2340 × 1080 & 13:6 & 2.16667 \\ \midrule 3840 × 2160 & 16:9 & 1.77778 \\ 2688 × 1512 & 16:9 & 1.77778 \\ 640 × 360 & 16:9 & 1.77778 \\ \midrule 3264 × 2448 & 4:3 & 1.333 \\ 3200 × 2400 & 4:3 & 1.333 \\ 320 × 240 & 4:3 & 1.333 \\ 240 × 320 & 4:3 & 1.333\\ \midrule 2976 × 2976 & 1:1 & 1 \\ 1080 × 1080 & 1:1 & 1 \\ \midrule 2880 × 2156 & 720:539 & \footnotesize{$1.3358$} \\ \midrule 3952 × 1824 & 13:6 & \footnotesize{$2.167$} \\ 2340 × 1080 & 13:6 & \footnotesize{$2.167$} \\ \midrule 1280 × 768 & 5:3 & 1.6667 \\ 800 × 480 & 5:3 & 1.6667 \\ \midrule 1024 × 738 & 512:369 & 1.3875 \\ \midrule 864:480 & 9:5 & 1.8\\ \midrule 720:480 & 3:2 & 1.5 \\ \midrule 640:400 & 8:5 & 1.6\\ \midrule 352:288 & 11:9 & 1.222 \\ 176:144 & 11:9 & 1.222 \\ \bottomrule \end{tabularx} \end{document}