body{
    background-color:rgb(17, 37, 74);
}
h1{
    text-align: center;
    font-size: 2.5rem;
    color:white;
    margin:30px 0 50px;
}
.gallery{
    margin: 10px 50px;
    text-align: center;
}

.gallery img{
    width: 380px;
    height: 220px;
    object-fit: cover;
    padding: 10px;
    filter: grayscale(100%);
    transition: 0.7s;
}
.gallery img:hover{
    filter: grayscale(0);
    transform: scale(1.1);
}