html {
    background: #ffffff;
}

body {
    background: linear-gradient(180deg, #aaaaaa, #ffffff);
    color: #000000;
}

hr {
    background-color: #ffffff;
}

.button {
    background: #333333;
    color: white;
    border: solid 2px #777777;
}
.button:hover, .button:focus {
    background: rgba(0,0,0,0.1);
}

.navbar {
    background: #ffffff;
    color: #000000;
}
.navbar a:hover, .navbar a:focus {
    background: rgba(0,0,0,0.1);
}