ol {
    counter-reset: item;
    list-style-type: none;
}

ol>li::before {
    counter-increment: item;
    content: counters(item, ".") " ";
}

p{
    text-indent: 2em;
}

.image{
    width: 100%;
    box-sizing: border-box;
    margin: 0 auto;
    text-align: center;
}

header{
    text-align: center;
}

footer{
    text-align: center;
}