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

.container{
    background-color: aqua;
    border: 1px solid red;
    display: flex;
    gap: 10px;
    justify-content: space-around;
    align-items: center;
    height: 800px;
    flex-wrap: wrap;
}

.item{
    /* margin: 5px; */
    padding: 5px;
    border: 1px solid blue;
    min-width: 400px;
    max-width: 400px;
    height: 200px;    
}

#first{
    background-color: darksalmon;
}

#second{
    background-color: lawngreen;
}

#third{
    background-color: darkgray;
}

#fourth{
    background-color: gold;

}