style.css

/*
Theme Name: Playground
Description: George Martsoukos WordPress Playground theme
Author: George Martsoukos
Author URI: https://georgemartsoukos.com
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: playground
*/

/* RESET & BASIC STYLES
–––––––––––––––––––––––––––––––––––––––––––––––––– */
:root {
	--white: #fff;
	--header-bg: #d90429;
	--footer-bg: #2b2d42;
  }

  * {
	box-sizing: border-box;
  }

  a {
	color: inherit;
  }

  body {
	font: 18px/1.5 sans-serif;
	margin: 0;
  }

  button {
	cursor: pointer;
	font-size: 100%;
  }

  .container {
	max-width: 1400px;
	padding: 0 20px;
	margin: 0 auto;
  }

  /* MAIN STYLES
  –––––––––––––––––––––––––––––––––––––––––––––––––– */
  .site-wrapper {
	display: flex;
	flex-direction: column;
	min-height: 100vh;
  }

  .site-header {
	padding: 3vh 0;
	text-align: center;
	background: var(--header-bg);
  }

  .site-header > div {
	display: flex;
	justify-content: center;
  }

  .site-header a {
	line-height: 1;
  }

  .site-main {
	display: flex;
	align-items: center;
	flex-grow: 1;
	text-align: center;
	margin: 30px 0;
  }

  .site-main > * {
	width: 100%;
  }

  .site-main h1 {
	line-height: 1.2;
	margin: 0 0 20px;
  }

  .site-footer {
	padding: 30px 0;
	color: var(--white);
	background: var(--footer-bg);
  }

  .site-footer .logo-wrapper div {
	font-style: italic;
	font-size: 15px;
	line-height: 1;
  }

  .site-footer .widgets-wrapper {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	grid-gap: 40px;
	border-top: 1px solid #353851;
	margin-top: 20px;
  }

  .site-footer h5 {
	font-size: 20px;
	margin: 20px 0;
  }

  .site-footer ul {
	list-style: none;
	padding: 0;
	margin: 0;
  }

  .site-footer ul:not(.socials) li + li {
	margin-top: 10px;
  }

  .site-footer a {
	text-decoration: none;
  }

  .site-footer .socials {
	display: grid;
	grid-template-columns: auto auto auto auto;
	justify-content: flex-start;
	grid-gap: 15px;
  }

  .site-footer .socials svg {
	fill: var(--white);
  }

  @media (max-width: 650px) {
	.site-footer .widgets-wrapper {
	  display: grid;
	  grid-template-columns: repeat(2, 1fr);
	}
  }