main {
    position: fixed;
    top: 0px;
    left: 0px;
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #f8fcfe;
    background: radial-gradient(104% 68% at 100% 70%, #78ffe7, #6798e0 67%, #745abf);
}
nav {
    display: flex;
    z-index: 1;
    position: fixed;
    top: 0px;
    left: 0px;
    width: 100vw;
    padding: 25px;
    align-items: center;
    justify-content: space-between;
    box-sizing: border-box;
}
nav img {
    width: 150px;
}
nav a {
    color: #e0dfdf;
    display: block;
    text-decoration: none;
    font-family: Helvetica;
    font-size: 18px;
}
footer {
    display: flex;
    z-index: 1;
    position: fixed;
    bottom: 20px;
    right: 20px;
    flex-direction: column;
    align-items: center;
    color: white;
    font-family: helvetica;
}

footer img {
    width: 200px;
}