body {
    font-family: Verdana, Tahoma, sans-serif;
    font-size: 18px;
}


nav {
    width: 220px;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    padding: 40px 20px;
    box-sizing: border-box;

    background-color: rgb (100, 100, 100);
    color: white;
}
nav.ul {
    list-style: none;
    padding: 0;
}

nav.a {
    color: white;
    text-decoration: none;
    padding: 12px 4px;
    display: block;
}
nav.a:hover {
    color:aqua;
}
main {
    margin-left: 200px;
}
.zdorj {
    text-align: right;
    font-style: italic;
}