body{
    background-color: darkcyan;
    place-items: center;
}

header{
    text-align: center;
    background-color: whitesmoke;
    width: 100%;
}

footer{
    background-color: whitesmoke;
    text-align: center;
    position: fixed;
    left: 0;
    bottom: 0;
    width: 100%;
}

.container{
    text-align: center;
    vertical-align: center;
    display: inline-grid;
    grid-template-columns: repeat(6, 1fr);
    margin: auto;
}

.item{
    margin-top: 10px;
    margin-left: 10px;
    height: 42px;
    width: 228px;
    border: 2px solid black;
    background-color: whitesmoke;
    border-radius: 4px;
}