header {
    background-color: #4a4a4a;
    color: blanchedalmond;
    text-align: center;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

main {
    background-color: #e4e4e4;
    width: 90%;
    padding: 2rem;
    border: solid 0.5rem red;
    margin: 0 auto; 
}

footer {
    background-color: darkolivegreen;
    color: azure;
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
}

.Profile_pic {
    display: block;  
    width: 50%; 
    height: auto;  
    border-radius: 50%;  
    border: 0.2rem solid #ccc;  
    margin: 0 auto;  
    object-fit: cover; 
}
nav h2 {
    text-align: center;
    margin-bottom: 10px;
}

nav ul {
    list-style-type: none;
    text-align: center;
    padding: 0;
}

nav ul {
    display: inline-block;
    margin: 0 15px;
}

nav ul a {
    text-decoration: none;
    font-weight: bold;
    color: #00695c;
    transition: color 0.3s ease;
}

nav ul a:hover {
    color: #004d40;
}
ul {
    list-style-type: none;
    padding-left: 0;
    margin: 0;
}



@media (min-width: 768px) {
    header {
        padding: 3rem 0;
        margin-bottom: 3rem;
    }

    main {
        width: 70%;
        padding: 3rem;
    }

    footer {
        padding: 3rem;
        margin-top: 3rem;
    }

    .Profile_pic {
        width: 40%;
    }
}


@media (min-width: 1024px) {
    header {
        padding: 4rem 0;
        margin-bottom: 4rem;
    }

    main {
        width: 50%;
        padding: 4rem;
    }

    footer {
        padding: 4rem;
        margin-top: 4rem;
    }

    .Profile_pic {
        width: 30%;
    }
}