styles.css

body {
    background: black;
    color: #fff;
    font-family: 'Open Sans', sans-serif;
    font-size: 15px;
    letter-spacing: 2px;
    background-image: url("background1.jpg");
    background-repeat: no-repeat;
    background-position:center;
    background-size:cover;
}

img {

    border-radius: 50%;
}

.profile-picture {

    display: block;
    margin-left: auto;
    margin-right: auto;
    margin-top: 10%;
    height: auto;
    max-width: 100px;
}

.profile-name {

    text-align: center;
    padding: 30px;
}

#bio {

    text-align: center;
}
.links {

    text-align: center;
    margin-top: 20px;
    padding: 20px;
    border: 1px solid white;
    border-width: 2px;
    width: 290px;
    display: block;
    margin-left: auto;
    margin-right: auto;
    border-radius: 40px;
}

a {

    text-decoration: none;
    color: white;
    transition: color 1s;
}

a:hover {

    color: #000;
    background: #fff;
}