* {
    margin: 0; padding: 0; box-sizing: border-box; border: 0;
}

:root {

}
/* styling for mobile and bigger */
body {
    background-color: gray;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    padding: 24px 16px 500px 16px;
}

header {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

header div {
    min-height: 100px;
    background-color: darkred;
    flex: 1 0 100%;
}

.hero {
    min-height: 100px;
    background-color: white;
    margin: 24px 0;
}

.blue {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.blue div {
    min-height: 200px;
    background-color: darkblue;
    margin: 8px 0;
}

.white {
    display:flex;
    flex-flow: row wrap;
    gap: 8px;
}

.white div {
    min-height: 100px;
    background-color: white;
    flex: 1 0 100%;
    

}

/* styling for tablets or larger */
@media (min-width:768px) {

.header div {
    flex: 1 0 40%;
}
.white div {
    flex: 1 0 40%;


}



}


/* Styling for desktop and laptops */
@media (min-width: 1024px) {

header {
    flex-direction: row;
}    
header div {
    flex: 1 0 40%;
}

.hero {
    min-height: 360px;
}

.blue {
    flex-direction: row;

}

.blue div {
    flex: 1 0 20%;
}

.white div {
    flex: 1 0 20%;;

}
}