.doc_word, .doc_pdf, .doc_xls, .doc_jpg {
    display: inline-block;
    width: 17px;
    height: 17px;
    background-size: 17px 17px;
    margin-left: 6px;
}
.doc_pdf {
    background-image: url(../img/doc_pdf.png);
}
.doc_word {
    background-image: url(../img/doc_word.png);
}
body main {
    overflow-x: hidden;
}