html,body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
    background: #161616;
    overflow: hidden;
    cursor: grab;
}
.header{
    position: fixed;
    top: 10%;
    left: 50%;
    transform: translate(-50%,-50%);
    font-family: "Monument Extended";
    text-transform: uppercase;
    color:white;
    z-index: 2;
}
.container {
    position: absolute;
    /* width: 200%; */
    /* height: 200vh; */
 
}
.row{

    display: flex;
    justify-content: space-around;
    margin: 4em 0;
}
.block{
    width: 400px;
    height: 500px;
    background:grey;
    margin: 1em;
    filter: grayscale(1);
    opacity: 0.4;
    transition: 1s;
}

.block:hover { 
    filter : grayscale(0);
    opacity:1; 
}
.container.block:hover ~ .header {
    opacity: 0;
}
.block-1{
    background: url("1.jpg") no-repeat 50% 50%;
    background-size: cover;
}
.block-2{
    background: url("2.jpg") no-repeat 50% 50%;
    background-size: cover;
}
.block-3{
    background: url("3.jpg") no-repeat 50% 50%;
    background-size: cover;
}
.block-4{
    background: url("4.jpg") no-repeat 50% 50%;
    background-size: cover;
}
.block-5{
    background: url("5.jpg") no-repeat 50% 50%;
    background-size: cover;
}
.block-6{
    background: url("6.jpg") no-repeat 50% 50%;
    background-size: cover;
}
.block-7{
    background: url("7.jpg") no-repeat 50% 50%;
    background-size: cover;
}
.block-8{
    background: url("8.jpg") no-repeat 50% 50%;
    background-size: cover;
}