* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background-color: #deedff;
    color: #333;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

#link{
    color: rgb(10, 187, 187);
}

header {
    background-color: #007BFF;
    color: rgb(230, 229, 228);
    padding: 20px;
    width: 100%;
    text-align: center;
}

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

nav ul li {
    margin: 0 15px;
    margin-top: 1em;
    justify-self: left;
    list-style-type: disc;
}

nav ul li a {
    color: rgb(0, 0, 0);
    text-decoration: none;
}

nav ul li a:hover {
    text-decoration: underline;
    color: rgb(0, 214, 214);
}

main {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    max-width: 600px;
    margin: 20px;
    text-align: center;
}

#sis{
    color: rgb(165, 181, 196);
}

h1, h2 {
    margin-bottom: 1em;
    margin-top: 1em;
}

p{
    line-height: 1.1em;
}

#des{
    color: #797979;
}

footer {
    margin-top: 20px;
    text-align: center;
    font-size: 0.9em;
    color: #666;
}