body{
    padding-left: 30px;
    padding-right: 30px;
}
h1{
    font-size: 3em;
    text-align: center;
    text-decoration: underline;
}
h2{
    font-size: 3em;
}
img{
    display: block;
    margin-left: auto;
    margin-right: auto;
    width: 100%;
}
.description {
    font-size: 2em;
}

.examples {
    color:darkgray;
    font-size: 1.2em;
}