style.css

/*
Theme Name: NetBrothers WordPress Skeleton Theme
Theme URI: https://netbrothers.de
Author: Thilo Ratnaweera <info@netbrothers.de>
Author URI: https://www.linkedin.com/in/thilo-ratnaweera/
Description: This minimalistic skeleton theme is intended as a starting point, if you plan to develop a WordPress theme from scratch.
Tags: skeleton, developer, minimalistic, minimal, translation-ready
Version: 1.0.0
Requires at least: 6.4.0
Requires PHP: 8.1
License: GPL-3.0-or-later
License URI: https://spdx.org/licenses/GPL-3.0-or-later.html
Text Domain: nb-wordpress-skeleton-theme
*/

/* http://meyerweb.com/eric/tools/css/reset/ 
   v2.0 | 20110126
   License: none (public domain)
*/

a,
abbr,
acronym,
address,
applet,
article,
aside,
audio,
b,
big,
blockquote,
body,
canvas,
caption,
center,
cite,
code,
dd,
del,
details,
dfn,
div,
dl,
dt,
em,
embed,
fieldset,
figcaption,
figure,
footer,
form,
h1,
h2,
h3,
h4,
h5,
h6,
header,
hgroup,
html,
i,
iframe,
img,
ins,
kbd,
label,
legend,
li,
mark,
menu,
nav,
object,
ol,
output,
p,
pre,
q,
ruby,
s,
samp,
section,
small,
span,
strike,
strong,
sub,
summary,
sup,
table,
tbody,
td,
tfoot,
th,
thead,
time,
tr,
tt,
u,
ul,
var,
video {
  margin: 0;
  padding: 0;
  border: 0;
  font-size: 100%;
  font: inherit;
  vertical-align: baseline;
}

/* HTML5 display-role reset for older browsers */
article,
aside,
details,
figcaption,
figure,
footer,
header,
hgroup,
menu,
nav,
section {
  display: block;
}

body {
  line-height: 1;
}

ol,
ul {
  list-style: none;
}

blockquote,
q {
  quotes: none;
}

blockquote:before,
blockquote:after,
q:before,
q:after {
  content: '';
  content: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/**
 * Project: wordpress-skeleton-theme
 * 
 * @author Thilo Ratnaweera <thilo.ratnaweera@netbrothers.de>
 * @copyright © 2024 NetBrothers GmbH.
 * @license GPLv3
 */

:root {
  --nb-breakpoint-sm: 576px;
  --nb-breakpoint-md: 768px;
  --nb-breakpoint-lg: 992px;
  --nb-breakpoint-xl: 1200px;
  --nb-breakpoint-xxl: 1400px;
  --nb-color-header-bg: black;
  --nb-color-header-text: white;
  --nb-color-body-bg: rgba(0, 0, 0, 0.25);
  --nb-color-body-text: rgba(0, 0, 0, 0.75);
  --nb-color-footer-bg: black;
  --nb-color-footer-text: white;
  --nb-natural-padding: 1rem 3rem;
}

html {
  font-size: 10px;
}

body {
  background-color: var(--nb-color-body-bg);
  display: flex;
  color: var(--nb-color-body-text);
  flex-direction: column;
  font-size: var(--nb-body-font-size);
  margin: 0 auto;
  max-width: 1200px;
  --nb-body-font-size: 1.9rem;
}

h1,
h2,
h3 {
  font-weight: bold;
  margin-bottom: 2rem;
}

h1 {
  font-size: calc(var(--nb-body-font-size) * 1.9);
}

h2 {
  font-size: calc(var(--nb-body-font-size) * 1.4);
}

header {
  background-color: var(--nb-color-header-bg);
  color: var(--nb-color-header-text);
  display: flex;
  flex-direction: column;
  padding: var(--nb-natural-padding);
  position: sticky;
  top: 0;
}

@media (min-width: 992px) {
  header {
    flex-direction: row;
  }
}

#content-container {
  display: flex;
  flex-direction: row;
  /* break sidebar if not enough space */
  flex-wrap: wrap;
}

main, aside {
  padding: var(--nb-natural-padding);
  width: 100%;
}

@media (min-width: 992px) {
  main {
    max-width: var(--nb-breakpoint-md);
    width: auto;
  }
  aside {
    flex-grow: 1;
    max-width: calc(var(--nb-breakpoint-lg) - var(--nb-breakpoint-md));
    width: auto;
  }
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 992px) {
  .menu {
    flex-direction: row;
  }
}

footer {
  background-color: var(--nb-color-footer-bg);
  color: var(--nb-color-footer-text);
  margin-top: 5rem;
  padding: var(--nb-natural-padding);
}

a {
  color: inherit;
}

.gallery-container {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.post-preview__meta {
  font-style: italic;
  margin-bottom: 1rem;
}