style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

header{
    margin: 0 auto;
    max-width: 95%;
    background: linear-gradient(50deg, red, green, blue, orange, pink, aqua, skyblue, purple, transparent);
    color: white;
    font-weight: bolder;
    text-shadow: 5px 5px 5px black;
}

nav ul{
    width: 100%;
    /* background-color: green; */
    display: flex;
    justify-content: flex-end;
}

nav ul li{

    list-style: none;
    margin: 5px;
    padding: 5px;
}

nav ul li a{

    padding: 0 5px;
    color: white;
    text-transform: capitalize;
    text-decoration: none;
}

main{
    min-height: 100vh;

}

main .container{
    margin: 0 auto;
    max-width: 95%;
    /* background-color: orange; */
    height: 300px;
    display: flex;
    justify-content: space-between;
}

.container div{
    width: 200px;
    height: 300px;
    /* background-color: blueviolet; */
    border: 2px solid black;
    padding: 3px;
}

.img{
    width: 150px;
    height: 140px;
}

button{
    float: right;
    margin-right: 40px;
    width: 70px;
    height: 30px;
    
}

.dbutton{
    float: right;
    margin-right: 120px;
    width: 70px;
    height: 30px;
    margin-top: 70px;
    position: sticky;
}

.dbutton a{
    text-decoration: none;
}

.p{
    padding: 3px;
    line-height: 5px;
}

@media (max-width: 500px) {
    body{
        overflow-x: hidden;
    }
    main{
        display: flex;
        flex-direction: row;
    }
    main .container{
        margin: 0 auto;
        max-width: 95%;
        /* background-color: orange; */
        height: 300px;
        display: flex;
        justify-content: space-between;
        flex-direction: column;
    }

    .container div{
        width: 200px;
        height: 300px;
        /* background-color: blueviolet; */
        border: 2px solid black;
        padding: 3px;
        margin: 10px 0;
    } 
}