a:link {
    color: black;
    background-color: none;
    text-decoration: none;
    }
    
    a:visited {
    color: black;
    background-color: none;
    text-decoration: underline;
    }

    p {
        color: blue;
    }
    
    h1 {
        font-size: 24px;
        text-align: center;
    }
    .center-text {
        text-align: center;
    }
    .center-image {
        display: block;
        margin: 0 auto;
    }