.body {
}

.div {
    font-size: 17px;
    font-family: Calibri;
}

.h1 {
    font-size: 20px;
    font-family: Calibri;
}

.footer {
    text-align: center;
    background-color: gray;
    color: white;
    font-size: 1em;
    width: 100%;
    height: 30px;
    overflow: hidden;
}

.nav {
    background-color: gray;
}