main.css

:root {
    --main-white: #f0f0f0;
    --main-blue: #a9d9f1;
    --link-grey: #808080;
}

html {
    box-sizing: border-box;
    overflow-x: hidden;
    font-size: 100%;
    scroll-behavior: smooth;
    margin-left: 5%;
    margin-right: 5%;
}

body {
    margin-top: 13vh;
    background: var(--main-blue);
}

h1,
h2,
li,
p {
    font-family: Consolas, monaco, monospace;
    font-weight: 500;
    text-align: left;
    line-height: 1.7;
}

h1 {
    font-size: 5rem;
}

h2 {
    font-size: 2rem;
}

a {
    text-decoration: none;
    color: black;
}

a:hover {
    color: var(--link-grey);
    transition: color 0.3s ease-in;
}

#navbar {
    display: flex;
    justify-content: space-evenly;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: auto;
    background: var(--main-white);
    box-shadow: 0 2px rgba(0, 0, 0, 0.4);
    z-index: 1;
}

#nav-ul {
    display: flex;
    flex-direction: row;
}

.nav-element {
    list-style-type: none;
    margin: 0 2vw;
    font-size: 5vh;
}