* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;

}

body {
    background-color: #a89a8b22;
}

.box-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-top: 20%;

}

#boxes {
    display: flex;
    flex-direction: row;
    gap: 1.5rem;
    
}

.box {
    height: 8rem;
    width: 8rem;
    background-color: aqua;
    margin: 1rem;
    border: 1px solid black;
}

#heading {
    font-size: 2rem;
    text-align: center;
}

#red {
    background-color: rgb(229, 123, 123);
}

#blue {
    background-color: hsl(212, 65%, 54%);
}

#green {
    background-color: lightgreen;
}

#yellow {
    background-color: rgba(250, 250, 0, 0.305);
}

/* media queries */
#boxes {
    flex-wrap: wrap;
}

.box {
    cursor: pointer;
}

@media (max-width: 1024px) {
    .box-container {
        margin-top: 12%;
        padding: 0 1rem;
    }
    .box {
        height: 7rem;
        width: 7rem;
        margin: 0.75rem;
    }
}

@media (max-width: 768px) {
    .box-container {
        margin-top: 10%;
    }
    #boxes {
        gap: 1rem;
        justify-content: center;
    }
    .box {
        height: 6rem;
        width: 6rem;
    }
    #heading {
        font-size: 1.75rem;
    }
}

@media (max-width: 480px) {
    .box-container {
        margin-top: 8%;
    }
    .box {
        height: 5rem;
        width: 5rem;
        margin: 0.5rem;
    }
    #heading {
        font-size: 1.5rem;
    }
    #footer-para {
        padding: 0 1rem;
        text-align: center;
    }
}