body {
    color: white;
    background-color: #181a1b;
    font-size: 16px;
    font-family: "Trebuchet MS";
}

.center {
    margin: 100px;
    margin-top: 50px;
}

.textbox {
    width: 100%;
    padding: 12px 20px;
    margin: 8px 0;
    display: inline-block;
    color: white;
    border: 1px solid #ccc;
    background-color: #181a1b;
    border-radius: 4px;
    box-sizing: border-box;
}

.shift {
    margin-left: 5px;
}

#result,#average,#range {
    margin-top: 5px;
    margin-bottom: 5px;
}

#examples {
    margin-top: 25px;
}

a {
    color: darkgoldenrod;
}

a:hover {
    color: goldenrod;
}