body{
    box-sizing: border-box;
    background: silver;
    margin: 0;
    padding: 0;
}
.light_box{
    position: fixed;
    top:0;
    left:0;
    width:100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.705);
    z-index: 999;
    justify-content: center;
    align-items: center;
    display: none;
  }
  
  .light_box .inside_box{
    background: rgba(255, 255, 255, 0.6);
    padding:8px;
    max-width: 50%;
    text-align: center;
    box-sizing: border-box;
    border-radius: 16px;
  }
  
  .light_box .inside_box img{
    width:98%;
    box-sizing: border-box;
    background-image: cover;
  }
  .light_box button{
    background-color: #0b0f0b91;
    border: none;
    color: rgb(241, 231, 231);
    padding: 8px 16px;
    border-radius: 20px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
  }
.container-fluid{
    max-width: 100%;
    display: grid;
    grid-auto-flow: dense;
    grid-template: "1fr 1fr 1fr 1fr 1fr" 33.33vh
                   "1fr 1fr 1fr 1fr 1fr" 33.33vh
                   "1fr 1fr 1fr 1fr 1fr" 33.33vh;             
}
.container-fluid .box{
    position: relative;
    background: #ccc;
}
.container-fluid .box img{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.container-fluid .box.a{
    grid-row:span 2;
}
.container-fluid .box.b,
.container-fluid .box.f,
.container-fluid .box.h,
.container-fluid .box.g
{
    grid-column: span 2;
}
main .box:hover{
    transform: scale(1.015);
    z-index: 999;
}
@media(max-width:991px){
    .container-fluid{
        grid-template: "1fr 1fr 1fr" 250px
                       "1fr 1fr 1fr" 250px
                       "1fr 1fr 1fr" 250px
                       "1fr 1fr 1fr" 250px
                       "1fr 1fr 1fr" 250px;             
    }
}
@media(max-width:768px){
    .container-fluid{
        grid-template: "1fr 1fr" 250px
                       "1fr 1fr" 250px
                       "1fr 1fr" 250px
                       "1fr 1fr" 250px
                       "1fr 1fr" 250px            
                       "1fr 1fr" 250px            
                       "1fr 1fr" 250px;             
    }
    .container-fluid .box.h{
        grid-column: span 1;
    }
    .container-fluid{
        margin-top: 62px !important; 
    }
    .light_box .inside_box{
        max-width: 85%;
    }
}