.wpc-left-box {
    width: 30%;
    float: left;
}
.wpc-right-box {
    float: right;
    width: 67%;
}
.wpc-right-box .post-meta {
    margin-top: 20px;
}
@media (max-width: 980px) {
    .wpc-left-box,
    .wpc-right-box {
        width: 100%;
        float: none;
    }
}