.signiture {
    font-size: 1.3rem;
    text-align: right;
    padding-top: .5em;
}
.signiture .sign_sub {
    font-size: .8em;
    margin-left: 1em;
}
.prd_list li {
    margin-bottom: 1.5em;
}
.prd_list li a{
	position:relative;
	padding-left: 46px;
}
.prd_list li a:before {
    content: "";
    display: block;
    width: 40px;
    height: 40px;
    background-size: contain;
    background-position: center;
    background-repeat: no-repeat;
    position: absolute;
    bottom: 0;
    left: 0;
}
.prd_list li a.file_pdf:before {
    background-image: url(../img/icon-pdf_rdesign_14129.png);
}
.corp_list ul {
    display: grid;
    padding: 2%;
    margin: 0;
    list-style: none;
    background-color: #fff;
    grid-template-columns: repeat(5, 1fr);
    gap: 10px 20px;
}
.corp_list ul li {
    padding: 3%;
    display: flex;
    justify-content: center;
    align-items: center;
}
.corp_list ul li img {
    display: block;
}

@media screen and (max-width:600px){
.signiture .sign_sub {
	display:block;
}
tr td:nth-child(n+2) img {
    height: 28px;
}
.corp_list ul {
    grid-template-columns: repeat(2, 1fr);
}
}