/* CSS Resets */
h1, h2, h3, h4, p, nav ul {
    padding: 0;
    margin: 0;
}
nav ul {
    list-style-type: none;
}
img { max-width: 100%; display: block; }
* { box-sizing: border-box;}

/* end Resets */


:root {

    --green:    #7DEC7B;
    --white:    #fff;
    --lgray:    #aaa;
    --gray:     #424648;
    --dgray:    #1C1B1F;

}

a {
    color: var(--white);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    color: var(--dgray);
    padding-top: 20vh;
}

header {
    top: 0;
    height: 15vh;
    position: fixed;
    width: 100vw;
}

nav {
    top: 15vh;
    height: 5vh;
    position: fixed;
    width: 100vw;
    background-color: var(--dgray);
    
}
nav ul li a {
    text-decoration: none;
    display: block;
    color: var(--white);
    text-align: center;
    padding: 10px;

}

header, footer {
    background-color: var(--green);
}

header, section, footer {
    padding: 20px;
}

section {
    padding: 5vh 3vh 8vh 3vh;
    min-height: 110vh;
    scroll-margin-top: 19vh; /* Adjust to match the height of fixed header & nav */
    text-align:justify;
}

section ul li {
    text-align: left;
    margin-top: 20px;
}


section:nth-child(odd){
    background-color: var(--gray);
    color: var(--white);
}

section:nth-child(even){
    background-color: var(--dgray);
    color: var(--lgray);
}

.container {
    max-width: 1000px;
}

h1 {
    margin-bottom: .5em;
}

h2, h3 {
    margin: 2em 0 1em 0;
}

p {
    line-height: 1.4em;
    margin-bottom: 1em;
}

ol li {
    margin-bottom: 1em;
}

img {
    margin-bottom: 20px;
}

@media only screen and (min-width: 768px) {
    nav ul { display: flex; }
    nav ul li { flex: 1; }
}

@media only screen and (min-width: 1000px) {
    .container{ margin: auto; }
    nav ul {
        max-width: 1000px;
        margin: auto;
    }
    .content { 
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 20px;
    }
}