html{
    scroll-behavior: smooth !important;
}

nav{
    height: 10%;

}
#mainNav .navbar-brand img{
    height: 2.8rem;
}

.row{
    display: flex;
    flex-wrap: wrap;
    width: 100%;
}

.row .column{
    flex: 33%;
    width: auto;
    overflow: hidden;
    height: 100%;
    margin: 2px;
}
.img {
    position: relative;
}
.row .column img{
    width: 100%;
    height: 100%;
    padding: 4px;
    
}
.overlay{
    position: absolute;
    top: 0;
    left: 0;
    width: 98.2%;
    height: 98.2%;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    display: flex;
    flex-direction: column;
    align-items:center;
    justify-content: center;
    margin-top: 3.5px;
    margin-left: 3.5px;
   opacity: 0;
   transition: opacity 0.3s;
}
.overlay > h4{
    color: #fed136;
    font-style: italic;
}
.overlay:hover{
    opacity: 1;
}

@media screen and (max-width:768px) {
    .row .column{
        flex: 50%;
    }
    .overlay > h4{
        font-size: 1rem;
    }
    .overlay > p {
        font-size: 0.8rem;
    }
}

@media screen and (max-width:576px) {
    .row .column{
        flex: 100%;
    }
    .navbar-brand{
        padding: 0;
    }
    h3{
        font-size: 1rem;
        margin: 0;
    }
    #mainNav .navbar-brand img{
        height: 2rem;
    }
}

@media screen and (max-width:400px) {
    h3{
        font-size: 1rem;
    } 
    
    #mainNav{
        padding-top: 0;
        padding-bottom: 0;
    }
    #mainNav .navbar-nav .nav-item .nav-link{
        font-size: 0.7rem;
    }
    #mainNav .navbar-brand img{
        height: 1.5rem;
    }
}