tumblr.css

@-moz-document domain("www.tumblr.com") {
#right_column, .l-header-container {
    display: none;
}
.l-container.l-container--two-column, .l-container.l-container--two-column-dashboard, .l-container.l-container--two-column-dashboard .left_column, .l-container.l-container--two-column .left_column, .post.post_full {
    width: 100%;
    float: none;
}

.post_full.is_video .crt-video, .post_full.is_photo .post_media .post_media_photo, .post_full.is_photo .post_media .post_media_photo_ancho {
    margin: auto;
}

.post.post_full .post_content {
    text-align: center;
}

.post.themed_posts_experiment.post_full.is_quote .post_title {
    font-size: 6em;
    line-height: 1;
    font-style: italic;
    font-weight: bold;
}
}