/* PAGE DEFAULT STYLE */ 

.site-main.page-mode .entry-content,
.site-main.page-0-mode .entry-content,
.site-main.single-mode .entry-content {
    margin: auto;
    max-width: 850px;
    width: calc( 100% - 40px);
}

.site-main.single-mode .entry-content {
    margin: 25px auto;
}