:root {
    --transition-timing-function: cubic-bezier(0.45, 0, 0.55, 1);
    --transition-duration: 0.25s;
    --animation: var(--transition-timing-function) var(--transition-duration);
    --color-primary: #2196f3;
  }
  

body {
    font-family: 'Roboto Slab', serif;
    font-size: clamp(18px, 2.75vw, 20px);
    background-color: #121212;
    line-height: 1.6;
    color: #fff;
}

main {
    padding: 4em 1em;
    margin: 0 auto;
    max-width: 60ch;
}

h1 {
    font-size: 1.5em;
    margin: 0 0 1em;
}

p {
    margin: 0 0 1em;
}


ul {
    list-style: disc;
    margin: 0.5em 0 1em 2em;
}

a {
    color: var(--color-primary);
    text-decoration-thickness: 1px;
    text-decoration-style: solid;
    text-underline-offset: 0.25em;
    transition: text-decoration-thickness var(--animation);
}

a:hover {   
    text-decoration-thickness: 3px;
}

img {
    display: block;
    width: 100%;
    max-width: 20em;
    height: auto;
    margin-top: 2em;
}