Table: the border disappers when setting the cell color

Question

I referenced the code from https://www.tablesgenerator.com/ and set the cell color. But I found the cell border disappeared in generated table.

code:

% Please add the following required packages to your document preamble:
% \usepackage{multirow}
% \usepackage[table,xcdraw]{xcolor}
% If you use beamer only pass "xcolor=table" option, i.e. \documentclass[xcolor=table]{beamer}
\begin{table}[]
\begin{tabular}{|ccc|c|c|c|}
\hline
\rowcolor[HTML]{C0C0C0} 
\multicolumn{3}{|c|}{\cellcolor[HTML]{C0C0C0}Package}                                                             & \cellcolor[HTML]{C0C0C0}                       & \cellcolor[HTML]{C0C0C0}                                   & \cellcolor[HTML]{C0C0C0}                                  \\ \cline{1-3}
\rowcolor[HTML]{C0C0C0} 
\multicolumn{1}{|c|}{\cellcolor[HTML]{C0C0C0}QFP100} & \multicolumn{1}{c|}{\cellcolor[HTML]{C0C0C0}QFP64} & QFP48 & \multirow{-2}{*}{\cellcolor[HTML]{C0C0C0}Name} & \multirow{-2}{*}{\cellcolor[HTML]{C0C0C0}Digital Function} & \multirow{-2}{*}{\cellcolor[HTML]{C0C0C0}Analog Function} \\ \hline
\multicolumn{1}{|c|}{1}                              & \multicolumn{1}{c|}{1}                             & 1     & A                                              & A                                                          & -                                                         \\ \hline
\multicolumn{1}{|c|}{2}                              & \multicolumn{1}{c|}{2}                             & 2     & B                                              & B                                                          & -                                                         \\ \hline
\end{tabular}
\end{table}

I tried replaceing \cline{1-3} with hhline{---}, but the result was also problematic

Another problem, when zoom to 80%, more borders are no longer displayed

If the cell color is not set, there is no problem with the above

Thanks

Answer 1

Welcome to TeX.SE!!

I don't know your table generator (or any other, for that matter), but I think your table is easy to do with tabularray package. The code will be brief, simple and very legible (IMHO).

Something like this:

\documentclass{article}
\usepackage{lipsum}     % dummy text
\usepackage{tabularray} % clean tables
\usepackage{xcolor}     % colors
\definecolor{mygray}{HTML}{C0C0C0}
\begin{document}
\lipsum[1]
\begin{table}[ht]\centering
\begin{tblr}
{% format:
   colspec={cccccc},    % centered columns
   hlines,vlines,       % horizontal and vertical lines
   cell{1}{1}={c=3}{},  % enlarege cell{1}{1} to 3 columns
   cell{1}{4-6}={r=2}{},% enlarge cells {1}{4}, {1}{5} and {1}{6} to 2 rows
   row{1,2}={bg=mygray},% fisrt 2 rows with gray background
   cells={font=\sffamily}
}% content:
Package &       &       & Name & Digital Function & Analog Function\
QFP100  & QFP64 & QFP48 &      &                  &\
1       & 1     & 1     & A    & A                & -\
2       & 2     & 2     & B    & B                & -
\end{tblr}
\end{table}
\lipsum[2]
\end{document}

Update: same example with longtblr suggested by the comments.

\documentclass{article}
\usepackage{lipsum}     % dummy text
\usepackage{tabularray} % clean tables
\usepackage{xcolor}     % colors
\definecolor{mygray}{HTML}{C0C0C0}
\begin{document}
\lipsum[1-4]
\begin{longtblr}
[% longtable format:
  caption=Some title.,
]
{% format:
   colspec={cccccc},
   hlines,vlines,       % horizontal and vertical lines
   cell{1}{1}={c=3}{},  % enlarege cell{1}{1} to 3 columns
   cell{1}{4-6}={r=2}{},% enlarge cells {1}{4}, {1}{5} and {1}{6} to 2 rows
   row{1,2}={bg=mygray},% fisrt 2 rows with gray backgraound
   cells={font=\sffamily},
   rowhead=2,
}% content:
Package &       &       & Name & Digital Function & Analog Function\
QFP100  & QFP64 & QFP48 &      &                  &\
1       & 1     & 1     & A    & A                & -\
1       & 1     & 1     & A    & A                & -\
1       & 1     & 1     & A    & A                & -\
1       & 1     & 1     & A    & A                & -\
1       & 1     & 1     & A    & A                & -\
1       & 1     & 1     & A    & A                & -\
2       & 2     & 2     & B    & B                & -
\end{longtblr}
\lipsum[2]
\end{document}

Answer 2

Welcome to TeX.SX! The code can be simplified radically (which is not surprising, since table generators are known for the overly complicated code they produce):

• Changing the column definitions from |ccc|c|c|c| to |c|c|c|c|c|c|. allows you to remove all instances of \multicolumn{1}{...}{...}.
• If you use \rowcolor, there is no need to additionally add \cellcolor unless single cells should have another color, which is not the case here.
• Finally, you can use \hhline, but you need to adjust the spacing a bit. So, changing \\ \cline{1-3} to \\[-.4pt] \hhline{---~~~} should do the trick.

Full MWE:

\documentclass{article}
\usepackage{colortbl, xcolor, multirow, hhline}
\begin{document}
\begin{tabular}{|c|c|c|c|c|c|} \hline
\rowcolor[HTML]{C0C0C0} 
    \multicolumn{3}{|c|}{Package} & & & \[-.4pt] \hhline{---~~~}
\rowcolor[HTML]{C0C0C0} 
    QFP100 & QFP64 & QFP48 & \multirow{-2}{}{Name} & \multirow{-2}{}{Digital Function} & \multirow{-2}{*}{Analog Function} \ \hline
1 & 1 & 1 & A & A & - \ \hline
2 & 2 & 2 & B & B & - \ \hline
\end{tabular}
\end{document}