Table row & column spacing (not padding!)?

Question

I need space between rows and remove white lines between the columns. All the answers I found only referenced array stretch and \tabcolsep, which I use and like, however, these only change the cell-padding, not the spacing.

There are little white lines everywhere. I need to get rid of the ones between the columns and make them wider between the rows.

(Also since im already here. How can i vertically center the stuff in my cells? Seems row 1 is a little weird, while the others are vcentered?

\begin{table}[h]
\centering
\caption{My caption}
\vspace{10pt}
\label{my-label}

\def\arraystretch{2}
\setlength\tabcolsep{20pt}

\begin{tabular}{ L{5cm} c c }

 & \color{THIblue} {\bf something} 
 & \color{THIblue} {\bf anotherThing} \\

\rowcolor{THIlight}
Feature 1
 & \checkmark
 & \checkmark \\

\rowcolor{THIlight}
Feature 2
 & \checkmark
 & \checkmark \\

\rowcolor{THIlight}
Feature 3
 & \checkmark
 & \checkmark \\

\rowcolor{THIlight}
Feature 4
 &
 & \checkmark \\

\rowcolor{THIlight}
Feature 5
 & 
 & \checkmark \\

\rowcolor{THIlight}
Feature 6
 & 
 & \checkmark \\

\end{tabular}

\end{table}

EDIT: I defined my L Table column like this:

\newcolumntype{L}[1]{>{\raggedright\let\newline\\\arraybackslash\hspace{0pt}}m{#1}}

Because I wanted a left-aligned cell that is a certain size. What do I need to add to make that vertically centered?

Answer 1

Here is a solution: I used \columncolor rather than \rowcolor because I can specify a value for the optional parameter overhang, which enables to get rid of the thin vertical white line between columns.

Last, I replaced changing the value of \arraystretch with the cellspacepackage, which allows for vertical padding if rows, symmetrically at the top and the bottom of cells.

\documentclass{article}
\usepackage{amssymb, amsfonts}
\usepackage[x11names, table]{xcolor}
\usepackage{array, tabularx, caption, boldline}
\captionsetup{font=sf}
\usepackage{cellspace}
\setlength\cellspacetoplimit{6pt}
\setlength\cellspacebottomlimit{6pt}
\newcolumntype{L}[1]{>{\raggedright\arraybackslash}m{#1}}
\colorlet{THIlight}{LightSteelBlue3!60!}
\colorlet{THIblue}{SteelBlue4}
\usepackage{etoolbox}
\patchcmd{\hlineB}{\hrule}{\color{THIblue}\hrule}{}{}

\begin{document}

\begin{table}[h]
  \caption{My caption}\label{my-label}
  \sffamily\setlength\arrayrulewidth{0.8pt}\arrayrulecolor{THIblue}
  \setlength\tabcolsep{20pt}
  \begin{tabular}{>{\columncolor{THIlight}[20pt][21pt]}L{5cm}>{\columncolor{THIlight}[21pt]}Sc >{\columncolor{THIlight}[21pt][20pt]}Sc }
    & \color{THIblue} {\bfseries something}
    & \color{THIblue} {\bfseries anotherThing} \\
    \hlineB{2}
    Feature 1 & \checkmark & \checkmark \\\arrayrulecolor{white}
    \hline
    Feature 2 & \checkmark & \checkmark \\
    \hline
    Feature 3 & \checkmark & \checkmark \\
    \hline
    Feature 4 & & \checkmark \\
    \hline
    Feature 5 & & \checkmark \\
    \hline
    Feature 6 & & \checkmark \\
  \end{tabular}
\end{table}

\end{document} 

Answer 2

Here is what I did:

• To center the text vertically within the cell, I used the cellspace package as Bernard did because it is the simplest. You could use any other method like \newcolumntype or \raisebox (See this question for example), but this is easy and accurate
• To make the horizontal lines thicker, I used \setlength\arrayrulewidth{1.5pt}, besides using \arrayrulecolor{white} to make it white instead of the default black
• I picked the colors from the css code of the page and used it to color rows and text after defining the colors in HTML by \definecolor{THIblue}{HTML}{C3CFF4} or in RGB by \definecolor{THIblue}{RGB}{195,207,244}

Finally, here is the full code

\documentclass[12pt,a4paper]{article}
\usepackage{amssymb,array,cellspace}
\usepackage[table]{xcolor}
\setlength\cellspacetoplimit{10pt}
\setlength\cellspacebottomlimit{10pt}
\definecolor{THIblue}{HTML}{C3CFF4} %{RGB}{195,207,244}
\definecolor{blueHD}{HTML}{000B6C}  %{RGB}{0,11,108}

\newcolumntype{L}[1]{>{\raggedright\arraybackslash}p{#1}}
\arrayrulecolor{white}
\setlength\arrayrulewidth{1.5pt}

\begin{document}
\begin{table}[h] \sffamily
\centering
\caption{My caption}
\vspace{10pt}
\label{my-label}
\setlength\tabcolsep{20pt}
\rowcolors{2}{THIblue}{THIblue}
\begin{tabular}{L{5cm} Sc Sc}
   &\color{blueHD}\textbf{Something}&\color{blueHD}\textbf{Another thing}\\ 
   \textbf{Feature 1} & \checkmark & \checkmark \\ \hline
   \textbf{Feature 2} & \checkmark & \checkmark \\ \hline
   \textbf{Feature 3} & \checkmark & \checkmark \\ \hline 
   \textbf{Feature 4} &            & \checkmark \\ \hline
   \textbf{Feature 5} &            & \checkmark \\ \hline
   \textbf{Feature 6} &            & \checkmark \\ \hline
\end{tabular}
\end{table}
\end{document}

Edit:

Using a \newcolumntype would be more beneficial if the cell content is longer than one line. To achieve this, we define \newcolumntype{B}{>{\begin{minipage}{5cm}\raggedright\vspace{10pt}}c<{\vspace{10pt}\end{minipage}}} instead of cellspace. The values 5cm and 10pt should be adjusted as needed. Take care though not to leave a cell in the first column empty. Use \phantom{Word} to get the right calculation of cell height.

\documentclass[12pt,a4paper]{article}
\usepackage{amssymb,array}
\usepackage[table]{xcolor}
\definecolor{THIblue}{HTML}{C3CFF4} %{RGB}{195,207,244}
\definecolor{blueHD}{HTML}{000B6C}  %{RGB}{0,11,108}

\newcolumntype{B}{>{\begin{minipage}{5cm}\raggedright\vspace{10pt}}c<{\vspace{10pt}\end{minipage}}}
\arrayrulecolor{white}
\setlength\arrayrulewidth{1.5pt}

\begin{document}
\begin{table}[h]\sffamily
\centering
\caption{My caption}
\vspace{10pt}
\label{my-label}
\setlength\tabcolsep{20pt}
\rowcolors{2}{THIblue}{THIblue}
\begin{tabular}{Bcc}\hline
   \phantom{F}&\color{blueHD}\textbf{Something}&\color{blueHD}\textbf{Another thing}\\ \hline
   \textbf{Feature 1 Feature 1 Feature 1 Feature 1 Feature 1 Feature 1 Feature 1 Feature 1} 
    & \checkmark & \checkmark \\ \hline
   \textbf{Feature 2} & \checkmark & \checkmark \\ \hline
   \textbf{Feature 3} & \checkmark & \checkmark \\ \hline 
   \textbf{Feature 4} &            & \checkmark \\ \hline
   \textbf{Feature 5} &            & \checkmark \\ \hline
   \textbf{Feature 6} &            & \checkmark \\ \hline
\end{tabular}
\end{table}
\end{document}

Answer 3

Above picture is generated width:

\documentclass[border=2mm]{standalone}
    \usepackage{mathtools,amssymb}
    \usepackage[dvipsnames,svgnames,table]{xcolor}
    \usepackage{array,booktabs}

\begin{document}
%    \centering
%    \def\arraystretch{2}
%    \setlength\tabcolsep{20pt}
\renewcommand{\arraystretch}{1.3}
\newcolumntype{L}[1]{>{\raggedright\let\newline\\%
                       \arraybackslash\hspace{0pt}}m{#1}}
\arrayrulecolor{white}
\begin{tabular}{ L{5cm} |>{$}c<{$}|>{$}c<{$} }
            & \color{cyan}\textbf{something}
            & \color{cyan}\textbf{anotherthing} \\ 
\rowcolor{cyan!50}
Feature 1   &   \checkmark
            &   \checkmark \\   \addlinespace[0.8pt]
\rowcolor{cyan!50}
Feature 2   &   \checkmark
            &   \checkmark \\   \addlinespace[0.8pt]

\rowcolor{cyan!50}
Feature 3   &   \checkmark
            &   \checkmark \\   \addlinespace[0.8pt]

\rowcolor{cyan!50}
Feature 4   &
            &   \checkmark \\   \addlinespace[0.8pt]
\rowcolor{cyan!50}
Feature 5   &
            &   \checkmark \\   \addlinespace[0.8pt]
\rowcolor{cyan!50}
Feature 6   &
            &   \checkmark \\
    \end{tabular}
\end{document}

Since you not provide minimal working example (MWE) I construct own, where I select predefined color. Horizontal lines I obtain with addlinespace[0.8pt], and vertical on standard way, however I define with \arrayrulecolor{white} that they are white. Is this what you like to have?

I do not bother with table environment and caption. For caption let use caption package. It will give appropriate spacing between caption and table.