*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}
h2{
    text-align: center;
    position: relative;
    width: 80%;
    margin: 50px auto;
}
body{
    background-color: #000000;
}
h2::before{
    content: "";
    display: block;
    width: 100%;
    height: 2px;
    position: absolute;
    background-color: #ffffff;
    top: 50%;
    z-index: -1;
}
h2 span{
    background-color:#000000;
    padding: 0 15px;
}
.img-gallery{
    width: 80%;
    margin: 50px auto 50px;
    display: grid;
    grid-template-columns: repeat(auto-fit,minmax(240px,1fr));
    gap: 30px;
}
.img-gallery img{
    width: 100%;
    cursor: pointer;
    transition: 1s;
}
.img-gallery img:hover{
    transform: scale(1.2);
}
.ful-img{
    width: 100%;
    height: 100vh;
    background-color:#ffffff;
    position: fixed;
    top: 0;
    left: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 99;
}
.ful-img span{
    position: absolute;
    top: 5%;
    right: 5%;
    font-size: 30px;
    color: #000000;
    cursor: pointer;
}
.ful-img img{
    width: 90%;
    max-width: 600px;
}
@media screen and (max-width:400px){
    h2{
        text-decoration: underline;
    }
    h2::before{
        display: none;
    }
    h2 span{
        padding: 0;
    }
}