Base CSS to copy in all your web projects from now on.

base.css

/* Importing poppins font from google fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

/* Box sizing rules */
*,
*::before,
*::after {
  box-sizing: border-box;
}

/* Remove default margin */
body,
h1,
h2,
h3,
h4,
p,
figure,
blockquote,
dl,
dd {
  margin: 0;
}

/* Remove list styles on ul, ol elements with a list role, which suggests default styling will be removed */
ul[role='list'],
ol[role='list'] {
  list-style: none;
}

/* Set core root defaults */
html:focus-within {
  scroll-behavior: smooth;
}

/* Set core body defaults */
body {
  min-height: 100vh;
  text-rendering: optimizeSpeed;
  line-height: 1.5;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img,
picture {
  max-width: 100%;
  display: block;
}

/* Inherit fonts and removing outline for inputs and buttons */
input,
button,
textarea,
select {
  font: inherit;
  outline: none;
}

/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
  html:focus-within {
   scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* custom properties */
:root {
	--clr-primary: hsl(270, 50%, 39%);
	--clr-secondary: hsl(172, 51%, 42%);
	--clr-accent: hsl(202, 78%, 82%);
	--clr-light: rgba(250,250,250,1);
	--clr-dark: rgba(24,24,24,1);
	--clr-neutral: hsl(0, 0%, 91%);
	
	--fnt-family: 'Poppins', sans-serif;
	--fnt-heading: 2rem;
	--fnt-body: 1rem;
	--fnt-subtitle: .75rem;	
}

/* utility classes */
.flex {
	display: flex;
	justify-content: center;
	align-items: center;
}
.row {
	display: grid;
	grid-template-columns: repeat(12, 1fr);
	gap: 1em;
}
.col {
	grid-column: span 2;
}
.box {
	margin: 1em;
	padding: 2em;
}
.hover-effect {
	box-shadow: rgba(149, 157, 165, 0.2) 0px 8px 24px;
}