ul {
    display: flex;
    list-style: none;
}
li {
    padding-left: 10px;
}
#root {
    color: black;
    font-family: chalkduster;
}
#button {
    width: 100px;
    height: 30px;
    background: lightgreen;
    font-size: large;
    font-family: Futura;
}
.glink {
    font-family: "Avenir Next"
}
#error {
    display: none;
    color: red;
    font-family: "Big Caslon"
}
#error.visible {
    display: block;
}
input.invalid {
    border-color: red;
    border-style: solid;
    border-width: medium;
}
input.valid {
    border-color: green;
    border-style: solid;
    border-width: medium
}
.mandatory {
    color: red;
}