.next {
    float: revert;
    margin: 0px auto;
    text-decoration: underline;
}

.back {
    float: left;
    margin: 0px auto;
    display: inline-block;

}


.page-header {
    margin: 0px 0 5px;
    padding: 0;
    border-bottom: none;
    text-align: center;
}

p {
    text-align: justify;
    text-justify: inter-word;
}


.nav {
    visibility: hidden;
}