.products-block {
    width: 70%;
    margin: 0 auto;
    padding: 40px 10px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
    justify-items: center;
    align-items: stretch;
    min-height: 100px;
}

.products-block a {
    text-decoration: none;
}

@media screen and (max-width:800px) {
    .products-block {
        width: 80%;
}
}



.one, .two, .three, .four, .five, .six {
    position: relative;
    background-color: #000;
    background-position: center;
    background-size: cover;
    border-radius: 18px;
    overflow: hidden;
    color: #fff;
    height: 260px;
    box-shadow: 0 4px 18px 0 rgba(0, 0, 0, 0.13), 0 1.5px 4px 0 rgba(213, 61, 41, 0.10);
    padding: 24px 20px 20px 20px;
    text-align: left;
    display: flex;
    flex-direction: column;
    transition: transform 0.18s cubic-bezier(.4, 0, .2, 1), box-shadow 0.18s cubic-bezier(.4, 0, .2, 1);
}

.one {
    background-image: url("images/Products/European_firewood.jpg");
}
.two {
    background-image: url("images/Products/Charcoal.jpg");
}
.three {
    background-image: url("images/Products/Biochar.jpg");
}
.four {
    background-image: url("images/Products/Namwood.png");
}
.five {
    background-image: url("images/Products/Reclaimed_sleepers.webp");
}
.six {
    background-image: url("images/Products/French_oak_sleepers.jpg");
}

.one::before, .two::before, .three::before, .four::before, .five::before, .six::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.683); /* slightly more transparent overlay */
    z-index: 0;
    border-radius: 18px;
}
.one > *, .two > *, .three > *, .four > *, .five > *, .six > * {
    position: relative;
    z-index: 1;
}

background: url("images/European_firewood.jpg")
background: url("images/Charcoal.jpg")
background: url("images/Biochar.jpg")