body{
    font-size: 16px;
}

p{
    text-indent: 2em;
    font-size: 16px;
    line-height: 1.75;
}

.ban .tit {
    font-size: 25px;
}


/*body{
    filter: grayscale(100%);
}*/

.li_paper{
    counter-reset: o-counter 0;
    list-style-type: none;
    padding-left: 1em;
}

.li_paper li:before {
    content: '[' counter(o-counter) ']. ';
    counter-increment: o-counter;
}

.ul_item{
    list-style-type: disc;
    padding-left: 2em;
}

.nav {
    padding-right: 40px;
}