body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
}
main {
    flex: 1;
    /* border: 1px solid #ccc; */
}
nav {
    margin-bottom: 25px;
}
footer {
    line-height: 30px;
    background-color: #ddd;
    margin-top: 8px;
    padding: 4px 0;
    text-align: center;
    border-top: 1px solid #bbb;
}
#logo {
    text-align: center;
    font-size: 70px;
    font-weight: bold;
    margin: 10px 0;
}
#logo img{
    height: 90px;
}


nav .nav-bar {
    flex: 1;
    display: flex;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 10px;
    margin-right: 15px;
    padding: 8px 0;
}
nav .nav-bar li{
    min-width: 150px;
    text-align: center;
    padding: 5px 15px;
    font-weight: bold;
    font-size: 18px;
    color: #333;
}
nav .nav-bar li:not(:first-of-type){
    border-left: 1px solid #ccc;
}

nav .nav-bar .selected{
    color: rgb(99, 99, 221);
    font-weight: bold;
}
nav a {
    color: inherit;
}