Opa.

Usei o text-decoration: none na tag parágrafos pra tirar os sublinhados do links mas não rolou. Na verdade fui colocando em tudo pra ver se dava certo mas nada.

Meu código tá assim:

body {
    font-family: "Crimson Text", "Times New Roman", serif;
    background-color: #F2FFFC;
    font-size: 120%;
    text-decoration: none;
}

h1, h2 {
    font-family: "Open Sans Condensed", "Arial", sans-serif;
    margin: 0px;
    text-decoration: none;

}

main h1 {
    text-align: center;
    background-color: #851944;
    color: #FFF;
    padding: 20px;
    margin: 0px;
}

p {
    text-align: justify;
    text-decoration: none;
}

blockquote {
    background-color: #D9E5E3;
    padding: 20px;
    border: 10px solid #c2ccca;
    width: 250px;
    margin: 0px;
    padding: 20px;
    text-decoration: none;
}

aside {
    background-color: #3C1D3D;
    color: #F2FFFC;
    padding: 20px;
}

footer {
    background-color: #000;
    color: #F2FFFC;
    padding: 20px;
}

nav a {
    color: #F2FFFC;
    text-decoration: none;
}

main a {
    color: #851944;
}

aside a {
    color: inherit;
    font-family: "Open Sans Condensed", sans-serif;
}