main{
    height: 100vh;
    width: 800px;
    margin: auto;
    align-items: center;
}
.about_title{

    text-align: center;
}

table {
    width: 100%;
    border-collapse: collapse;
    border-spacing: 0;
    font-size: 14px;
}
table th {
    width: 22%;
    background: black;
    border: 2px solid  white;
    color: white;
    box-sizing: border-box;
    padding: 15px;
    vertical-align: middle;
    font-weight: bold;
    text-align: center;
}
table td {
    background: #fff;
    /* border: 1px solid #ccc; */
    box-sizing: border-box;
    padding: 15px;
    vertical-align: top;
    text-align: left;
}
@media all and (max-width: 767px) {
    table th, table td {
    display: block;
    width: 100%;
    border-bottom: none;
    }
    table tr:last-child td:last-child {
    border-bottom: 1px solid #ccc;
    }
    main{
    height: 100vh;
    width: auto;
    margin: auto;
    align-items: center;
    }
    .center td{
        text-align: center;
    }
}

.section {
    max-width: 1024px;
    margin: 0 auto;
    padding: 50px 10px;
}
.section p._a {
    font-size: 12px;
    font-weight: bold;
    margin: 30px 0 0;
}
.section p._a .link {
    display: inline-block;
    color: #607D8B;
    padding-left: 1.3em;
    text-indent: -1.3em;
}
.section p._a .link:before {
    content: '';
    display: inline-block;
    width: 5px;
    height: 5px;
    border-top: 2px solid #607D8B;
    border-right: 2px solid #607D8B;
    -webkit-transform: rotate(45deg);
    transform: rotate(45deg);
    margin-right: 10px;
}