:root {
    --color-header: var(--color-dark);
    --color-header-text: white;
}

.header-image {
    border-radius: 500px;
    margin-top: 1em;
}

.letter {
    background-color: #e2e2e2;
    background-image: url('../images/paper.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    font-family: cursive;
    font-size: 80%;
    width: 90%;
    margin: 1em auto 2em auto;
    padding: 10px;
    border-radius: 3px;
    transform: rotate(1deg);
    box-shadow: 0 2px 4px 2px hsla(0,0%,0%,0.25);
    box-sizing: border-box;
    text-align: left;
}

.letter .signature {
    font-size: 120%;
    margin-left: 1em;
}