body {
    margin: 0;
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    height: 100vh;
}
.box {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 48px;
    font-weight: bold;
    font-family:  'Trebuchet MS', sans-serif;
}
.box1 {
    background-color: green;
    color: white;
}
.box2 {
    background-color: white;
    color: black;
}
.box3 {
    background-color: red;
    color: white;
    
}