body, h1, h2, p, ul, li {
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    background-color: #f0f0f0;
}

header {
    background-color:  #0a0a23;
    color: #fff;
    text-align: center;
    padding: 20px;
}

nav {
    background-color: #808080;
    color: #fff;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 10px;
}

nav a {
    text-decoration: none;
    color: #fff;
    margin: 0 20px;
}

main {
    padding: 20px;
}

footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: #0a0a23;
    color: #fff;
    text-align: center;
    padding: 10px;
}

.png{
    display: right;

}

.transpertent{
background: rgb(2,0,36);
background: linear-gradient(90deg, rgba(2,0,36,1) 0%, rgba(52,9,121,0.03702731092436973) 0%, rgba(0,212,255,1) 100%);
opacity: 0.5;
}