.css-html {
    background-color: #FFF1AD;
}

.css-html h1 {
    text-shadow: 2px 2px 4px #000;
}

.highlight {
    background-color: yellow;
}

.error {
    background-color: red;
    width: 100px;
    height: 100px;
}

.special {
    background-color: green;
}

.effects-html {
    margin: 25px;
}

h3 {
    background-color: #ccc;
    padding: 5px;
}

#s, #f {
    display: none;
}

.effects2 {
    margin: 25px;
}

.effects2 p {
    text-align: center;
}