*,
*::before,
*::after{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body  {
    background-size: cover;
    background-position: bottom;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-image: url("Images/plant.jpg");
}

header {
    display: flex;
    align-items: center;
    margin-bottom: 10px;
    background-color: #FFFFFF;
}

.container {
    margin: auto;
    max-width: 1024px;
}

.logo {
    width: 500px;
}

nav {
    width: 100%;
    padding: 10px;
    text-align: center;
}

nav ul {
    height: 100%;
    padding: 0;
    margin: 5px;
    display: flex;
    list-style: none;
    justify-content: center;
}

nav ul li{
    display: block;
    padding: 0 10px;
    position: relative; 
}

nav ul li:not(:first-child)::after {
    left: 0; 
    bottom: 0; 
    content:""; 
    width: 1.5px;
    height: 90%; 
    display: block;
    position: absolute; 
    background-color: #604e82;
}

nav ul li a {
    height: 100%;
    color: #604e82;
    font-weight: 800;
    text-decoration: none;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}

main {
    padding: 20px;
    background-color: #4b2e8146;
}

.icontainer {
    padding: 20px;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    grid-template-rows: auto;
    grid-gap: 1.5rem;
    grid-template-areas: 'img-1 img-2 img-3 img-3'
                         'img-1 img-4 img-5 img-6'
                         'img-7 img-7 img-8 img-6';
}

.icontainer a{
    width: 100%;
    height: 25rem;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0px 0px 10px 10px rgba(0, 0, 0, 0.856)
}

.icontainer a i {
    color: rgba(255, 255, 255, .6);
    font-size: 3rem;
    position: relative;
    z-index: 100;
    padding: 1re 3rem;
    border: 2px solid rgba(255, 255, 255, .6);
    border-radius: .4rem;
    opacity: 0;
    transition: opacity .5s;
}

.icontainer a::before{
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, .8);
    opacity: 0;
    transition: opacity .5s;
}

.icontainer a:hover i,
.icontainer a:hover::before{
    opacity: 1;
}

.img-1{
    grid-area: img-1;
    min-height: 51.5rem;
    background-image: url(Images/pib.jpeg);
}

.img-2{
    grid-area: img-2;
    background-image: url(Images/slab.jpeg);
}
.img-3{
    grid-area: img-3;
    background-image: url(Images/pib2.jpeg);
}

.img-4{
    grid-area: img-4;
    background-image: url(Images/metal.jpeg);
}

.img-5{
    grid-area: img-5;
    background-image: url(Images/box1.jpg);
}

.img-6{
    grid-area: img-6;
    min-height: 51.5rem;
    background-image: url(Images/spiralslab.jpeg);
}

.img-7{
    grid-area: img-7;
    background-image: url(Images/duct.jpeg);
}

.img-8{
    grid-area: img-8;
    background-image: url(Images/pib3.jpeg);
}

@media screen and (max-width: 900px) {
    .icontainer{
        grid-template-areas: 
        'img-1 img-1 img-2 img-2'
        'img-1 img-1 img-3 img-3'
        'img-4 img-4 img-5 img-5'
        
        'img-6 img-7 img-7 img-7'
        'img-8 img-8 img-8 img-8';
    }

    .icontainer a{
        height: 20rem;
    }

    .img-1{
       min-height: 41.5rem;
    }
    
    .img-6{
        min-height: 20rem;
    }
}

/* Mobile */
@media only screen and (max-width: 800px) {
    header {
        flex-direction: column;
    }

    .logo {
        width: 100%;
    }
}

@media screen and (max-width: 600px) {
    .icontainer{
        grid-template-areas: 
        'img-1 img-1 img-1 img-1'
        'img-2 img-2 img-2 img-2'
        'img-3 img-3 img-3 img-3'
        
        'img-4 img-4 img-4 img-4'
        'img-5 img-5 img-5 img-5'
        
        'img-6 img-6 img-6 img-6'
        'img-7 img-7 img-7 img-7'
        'img-8 img-8 img-8 img-8';
    }

    .icontainer a, .img-1, .img-6 {
        min-height: 30rem;
        height: 20rem;
    }
}