body{
    background-color: white;
}

.wrapper{
    display: flex;
}

.quarter_box{
    width: 25%;
    background-color: lightgray;
    margin: 10px;
    padding: 2%;
}

.third_box{
    width: 33.333%;
    background-color: lightblue;
    margin: 10px;
    padding: 2%;
}

.green_third_box{
    width: 33.333%;
    background-color: palegreen;
    margin: 10px;
    padding: 2%;
}

.half_box{
    width: 50%;
    background-color: lightpink;
    margin: 10px;
    padding: 2%;
}

.twothirds_box{
    width: 66.667%;
    background-color: palegreen;
    margin: 10px;
    padding: 2%;
}

@media screen and (max-width: 728px) {
    .wrapper {
        flex-direction: column;
    }
    .quarter_box,.half_box, .third_box, .twothirds_box {
width: auto;    }
    
}