body {
    background-color: lightgrey;
}
header {
    text-align: center;
    font-family: Consolas;
    color: black;
    background-color: darkgray;
}
div{
    font-family: Consolas;
    text-align: center;
    display: inline-block;
    width: 20%;
    border-right: 5px solid darkgrey;
    border-bottom: 5px solid grey;
    border-radius: 60px;
    padding: 2%;
    margin-top: 10px;
}
footer{
    padding: 25px;
}
div:hover{
    background-color: darkgray;
}