body {
    background-image: url('mercury.png'); /* Replace with actual image URL */
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
    color: white;
    padding: 1rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
header img{
    width: 200px;
    display:block;
    position: relative;
}
header button{
    background-color: black;
    padding:10px
}
header a{
    color: white;
    text-decoration: none;
    font-size: larger;
}
span{
    margin-right: 25px;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


header {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 1rem;
}


header a {
    color: #fff;
    text-decoration: none;
    margin-right: 1rem;
}


hr {
    border: 2px solid blue;
    margin: 1rem auto;
    width: 80%;
}

.dropdown {
    position: relative;
    display: inline-block;
}

.dropbtn {
    background: transparent;
    color: white;
    padding: 16px;
    font-size: 16px;
    border: none;
    cursor: pointer;
}

.dropdown-content {
    display: none;
    position: absolute;
    background-color: #123456; 
    min-width: 160px;
    z-index: 1;
}

.dropdown-content a {
    color: white;
    padding: 12px 16px;
    text-decoration: none;
    display: block;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown:hover .dropbtn {
    background-color: #8A2BE2; /* Updated hover background color */
}

main {
    padding: 1rem;
    border-radius: 10px;
}

article.Mercury {
    max-width: 800px;
    margin: auto;
}

h1, h2 {
    color: aquamarine;
    text-decoration: underline;
}

p {
    color: aqua;
    font-size: large;
    font-family: Arial, Helvetica, sans-serif;
    text-align: justify;
    margin-bottom: 1rem;
}