*{
    box-sizing: border-box;
}

body{
    width: 100%;
    display: flex;
    flex-wrap: nowrap;
    box-sizing: content-box;
}

img{
    width: 100%;
}

div{
    width: 32%;
    margin: 20px 1px;
    padding: 10px;
}

h1{
    color: black;
    font-size: larger;
}

p{
    width: 100%;
    font-size: large;
    color: gray;
}

#url{
    color: blue;
}

@media screen and (max-width: 768px){
    body{
        display: flex;
        flex-wrap: wrap;
    }

    div{
        width: 48%;
    }

    div:last-of-type{
        width: 100%;
        justify-content: space-between;
        display: flex;
        flex-wrap: wrap;
    }

    section:last-of-type{
        width: 40%;
    }
    
    img[alt="g3"]{
        width: 60%;
    }
}

@media screen and (max-width: 450px){
    body{
        display: flex;
        flex-wrap: wrap;
    }

    div{
        width: 100%;
        margin: 10px auto;
    }
    
    img[alt="g3"]{
        width: 100%;
    }

    section:last-of-type{
        width: 100%;
    }
}