.postbox1 {
    width: 100%;
}

.postbox1posts {
    width: 100%;
}

.grid-post{
    position: relative;
    overflow:hidden;
    background-size: cover;
    background-position: center;
    transition-duration:0.3s;
}

.grid-post a{
    display:block;
    width:100%;
    background-color: transparent;
}

.cat-name {
    width: 89%;
    line-height: 40px;
    display: inline-block;
    border-right: 4px solid;
    padding-right: 1em;
}

.cat-more-link {
    text-align: center;
    width: 9%;
    float: left;
}

.postbox1posts article {
    background-size: cover;
    background-position: center;
    transition-duration: 0.3s;
    position: relative;
}

.postbox1posts article:hover {
    opacity: 0.9;
}

.postbox1posts article img {
    width: 100%;
    height: auto;
}

.postbox1posts article a {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
}

.postbox1posts article a span {
    width: 100%;
    display: block;
    position: absolute;
    bottom: 0;
    right: 0;
    text-align: center;
}

@media screen and (max-width: 1001px) {
    .cat-name {
        width: 70%;
    }

    .cat-more-link {
        width: 25%;
    }

    .postbox1posts {
        margin-right: 0;
        margin-left: 0;
    }
}

@media screen and (max-width: 600px) {
    .postbox1posts article, .cat-name, .cat-more-link {
        width: 100%;
    }
}