* {
margin: 0;
padding: 0;
list-style: none;
box-sizing: border-box;
}

#menu ul{
    text-align: center;
    margin-top: 25px;
}

#menu li{
    display: inline-block;
    border: 2px solid #b8b5b5;
    width: 100px;
    height: 100px;
    margin: 0 5px;
    border-radius: 5px;
    box-shadow: 0 0 10px #b8b5b5;
}

#menu li.red{
    background-color: #d63031;
}
#menu li.green{
    background-color: #00b894;
}
#menu li.blue{
    background-color: #0984e3;
}
#menu li.pink{
    background-color: #fd79a8;
}