style.css

*{ 
    margin: 0;
    padding: 0;
}
.main{
    color: black;
    text-align: center;
    font-size: 30px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: rgb(20, 15, 15);/*linear-gradient(to bottom,#240747 , transparent);*/
    text-shadow: 0 0 20px #e84a5f, 0 0 20px #e84a5f;
    border-bottom: 2px solid rgb(48, 34, 8);
}
.section{
    width: auto;
    height: 599px;
    color: white;
    background-image: url("cat.png");
    background-size: cover;
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    transition: all 1s ease;
}
.sec1{
    width: 200px;
    height: 300px;
    background-image: url("catpic1\ \(3\).jpg");
    background-size: cover;
    border: 2px solid black;
    text-align: bottom;
}
.sec2{
    width: 200px;
    height: 300px;
    background-image: url("catpic1\ \(4\).jpg");
    background-size: cover;
    border: 2px solid black;
}
.sec3{
    width: 200px;
    height: 300px;
    background-image: url("catpic1\ \(5\).jpg");
    background-size: cover;
    border: 2px solid black;
}
.sec4{
    width: 200px;
    height: 300px;
    background-image: url("catpic1\ \(2\).jpg");
    background-size: cover;
    border: 2px solid black;
}

.section div:hover {
    transform: scale(1.1);
}

@keyframes slideIn {
    from {
    transform: translateX(-100%);
    }
    to {
    transform: translateX(0);
    }
}

.section div {
    animation: 2s forwards;
}