Poland flag tutorial

This is what goes on HTML:

    <div class="halfStyle"> 
        <div class="white half"></div>
        <div class="red half"></div>
    </div>
    

This is what goes on CSS:

    .halfStyle {
        display: flex;
        flex-direction: column;
    }
    
    .half {
        width: 225px;
        height: 75px;
    }
    
    .white {
        background-color: white;
    }

    .red {
        background-color: red;
    }