@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

body {
    font-family: 'Roboto', sans-serif;
}



.div {
    width: 100px;
    height: 100px;
    background-color: blue;
    margin: 10px;
}
.blue {
    background-color: blue;
}

.yellow {
    background-color: yellow;
}

.red {
    background-color: red;
}