body {
    margin: 0;
    margin-top: 50px;
    font-family: sans-serif;
}
.blue {
  border-color: black;
}

header {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 50px;
    line-height: 50px;
    background-color: #eee;
}

header * {
    display: inline;
    height: 50px;
}

header ul {
    padding: 0;
}

header li {
    margin-left: 20px;
}

section {
    height: 100vh;
    border: 1px solid black;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    
    background-size: cover; /* Add this line */
    background-position: center center; /* Add this line */
    background-repeat: no-repeat; /* Add this line */
    background-attachment: fixed; /* Add this line */
}

#hero .profile-img {
    width: 400px;
    border-radius: 50%;
}

footer {
    text-align: center;
    padding: 50px;
	color: pink;
	
}

#hero h1 {
    font-size: 3em;
}

section h2 {
    font-size: 2.5em;
}

section h3 {
    font-size: 1.5em;
}

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

/* Add everything below here */

#hero {
    background-image: linear-gradient(rgba(255,255,255,0),rgba(255,255,255,0)), url('https://images.hdqwalls.com/wallpapers/doom-eternal-video-game-4k-kk.jpg');
}

#about {
    background-image: linear-gradient(rgba(255,255,255,0.2),rgba(255,255,255,0)), url('https://i.redd.it/i7oo37p28fb41.jpg');
}

#goals {
    background-image: linear-gradient(rgba(255,255,255,0.7),rgba(255,255,255,0)), url('https://i.ytimg.com/vi/tLS72xdY9qM/maxresdefault.jpg');
}

#contact {
    background-image: linear-gradient(rgba(255,255,255,0.3),rgba(255,255,255,0)), url('https://wallpapercave.com/wp/EsZh6XK.jpg');
}
#achievements {
    background-image: linear-gradient(rgba(255,255,255,0.3),rgba(255,255,255,0)), url('https://i.pinimg.com/originals/e3/d0/a1/e3d0a1df2a17d795bf44b4647bd288dd.jpg');
}