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I want the header of my table to be red but as you can see in the example it is red but also it seems there is a white extra column left to it. I can not seem to figure out why it is there. And how to remove it and get it fully red.

Below example table: example table

Below the code:

\documentclass[11pt, a4paper]{article} \usepackage[a4paper,top=2cm,hmargin=2cm,bottom=3cm,]{geometry} \usepackage{xcolor,colortbl} \usepackage[utf8]{inputenc} \usepackage{tikz} \usepackage{tikzpagenodes} \usepackage{fancyhdr} \usepackage{xcolor} \usepackage{colortbl} \usepackage[utf8]{inputenc} \usepackage{titletoc} \usepackage[T1]{fontenc} \usepackage{sectsty} \usepackage{float} \usepackage{atbegshi} \usepackage{fontspec} \usepackage{graphicx} \usepackage{tabu} \begin{document} \noindent\begin{tabular*}{\columnwidth}{@{\extracolsep{\fill}} |l|l|l|l|l|l|l|} \hline \rowcolor[RGB]{227,24,24}\color{white}\large\bfseries Nr &\color{white}\large\bfseries IP & \color{white}\large\bfseries TL1 & \color{white}\large\bfseries TL2 & \color{white}\large\bfseries TL3 & \color{white}\large\bfseries TL4 & \color{white}\large\bfseries TL5 \\\hline 1. & 1.1.1.1 & 5 & 0 & 1 & 0 & 0\\ \hline 2. & 1.2.3.4 & 5 & 0 & 0 & 0 & 0\\ \hline 3. & 5.5.5.5 & 2 & 1 & 1 & 1 & 1\\ \hline 4. & 95.231.766.33 & 1 & 0 & 0 & 0 & 0\\ \hline 5. & 115.231.796.313 & 1 & 0 & 0 & 0 & 0\\ \hline 6. & 115.231.776.313 & 1 & 0 & 0 & 0 & 0\\ \hline 7. & 715.231.76.313 & 1 & 0 & 0 & 0 & 0\\ \hline 8. & 415.231.76.313 & 1 & 0 & 0 & 0 & 0\\ \hline 9. & 315.231.76.313 & 1 & 0 & 0 & 0 & 0\\ \hline 10. & 215.231.76.313 & 1 & 0 & 0 & 0 & 0\\ \hline 11. & 115.231.76.33 & 0 & 0 & 3 & 0 & 0\\ \hline 12. & 95.271.76.33 & 0 & 0 & 2 & 0 & 0\\ \hline 13. & 95.231.786.33 & 0 & 0 & 1 & 0 & 0\\ \hline 14. & 95.231.756.33 & 0 & 0 & 1 & 0 & 0\\ \hline 15. & 95.231.746.33 & 0 & 0 & 1 & 0 & 0\\ \hline 16. & 95.231.736.33 & 0 & 0 & 1 & 0 & 0\\ \hline 17. & 95.231.726.33 & 0 & 0 & 1 & 0 & 0\\ \hline 18. & 95.231.716.33 & 0 & 0 & 1 & 0 & 0\\ \hline \end{tabular*} \end{document}
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    Could you please make your code a compilable minimal working example (MWE) by adding the docmentclass as well as the relevant packages? Commented May 16, 2019 at 13:48
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    Related:coloring entire row of tabular* and How do I color a table row correctly? Commented May 16, 2019 at 13:50
  • tabular* inserts space between the columns, and that is what you are seeing with the white gaps. Forcing the columns apart just make the table harder to read so simplest is to use a normal tabular Commented May 16, 2019 at 13:51
  • @DavidCarlisle i changed it into tabular without the asterisk but then i get the following error: l.156 \noindent\begin{tabular}{\columnwidth} {@{\extracolsep{\fill}} |l|l|l|l... Commented May 16, 2019 at 13:52
  • @L00n3y that isn't an error message, just a location. You presumably didn't delete the {\textwidth} argument that tabular does not have, Commented May 16, 2019 at 13:57

2 Answers 2

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tabular* inserts space between the columns, and that is what you are seeing with the white gaps. Forcing the columns apart just make the table harder to read so simplest is to use a normal tabular

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If you actually want your tabular to have a width equal to the maximal width (which is probably not a good idea), you can use {NiceTabular*} of nicematrix. The built-in command \rowcolor of that environment will color the whole row as expected.

\documentclass[11pt, a4paper]{article} \usepackage[a4paper,top=2cm,hmargin=2cm,bottom=3cm,]{geometry} \usepackage{nicematrix} \begin{document} \newcommand{\thead}{\color{white}\large\bfseries\sffamily} \arrayrulecolor[RGB]{227,24,24} \noindent\begin{NiceTabular*}{\columnwidth}{@{\extracolsep{\fill}}llccccc}[colortbl-like,hvlines] \rowcolor[RGB]{227,24,24}\thead Nr &\thead IP & \thead TL1 & \thead TL2 & \thead TL3 & \thead TL4 & \thead TL5 \\ 1. & 1.1.1.1 & 5 & 0 & 1 & 0 & 0\\ 2. & 1.2.3.4 & 5 & 0 & 0 & 0 & 0\\ 3. & 5.5.5.5 & 2 & 1 & 1 & 1 & 1\\ 4. & 95.231.766.33 & 1 & 0 & 0 & 0 & 0\\ 5. & 115.231.796.313 & 1 & 0 & 0 & 0 & 0\\ 6. & 115.231.776.313 & 1 & 0 & 0 & 0 & 0\\ 7. & 715.231.76.313 & 1 & 0 & 0 & 0 & 0\\ 8. & 415.231.76.313 & 1 & 0 & 0 & 0 & 0\\ 9. & 315.231.76.313 & 1 & 0 & 0 & 0 & 0\\ 10. & 215.231.76.313 & 1 & 0 & 0 & 0 & 0\\ 11. & 115.231.76.33 & 0 & 0 & 3 & 0 & 0\\ 12. & 95.271.76.33 & 0 & 0 & 2 & 0 & 0\\ 13. & 95.231.786.33 & 0 & 0 & 1 & 0 & 0\\ 14. & 95.231.756.33 & 0 & 0 & 1 & 0 & 0\\ 15. & 95.231.746.33 & 0 & 0 & 1 & 0 & 0\\ 16. & 95.231.736.33 & 0 & 0 & 1 & 0 & 0\\ 17. & 95.231.726.33 & 0 & 0 & 1 & 0 & 0\\ 18. & 95.231.716.33 & 0 & 0 & 1 & 0 & 0\\ \end{NiceTabular*} \end{document}

You need several compilations (because nicematrix uses PGF/Tikz nodes under the hood).

Output of the above code

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