*{
    box-sizing: border-box;
}

body {
    background-color: white;
}

body{
    border: solid gray 2px;
    display: flex;
    flex-wrap: wrap;
    padding: 10px;
}

header{
    width: 90%;
    margin: 20px auto;
    font-size: 7vw;
    text-align: center;
    text-transform: capitalize;
    color: grey;
    border-bottom: 10px double grey;
}


h1{
    width: 100%;
    font-size: 2em;
}

hr{
    width: 100%;
    height: 5px;
}

ul{
    width: 90%;
    display: flex;
    flex-wrap: nowrap;
}

li{
    list-style-type: none;
    width: 25%;
    padding: 1px 10px;
    border-right: solid 5px black;
    font-size: 1.35vw;
}

li:last-of-type{
    border: none
}

h3{
    font-size: 1em
}

ul > li > img{
    margin: auto 5px;
}

span{
    color: blue
}

article{
    width: 90%;
    margin: 20px auto;
    display: flex;
    flex-wrap: wrap;
    padding: 10px
}

main{
    width: 90%;
    margin: 20px auto;
    display: flex;
    flex-wrap: wrap;
    padding: 10px
}


h3{
    width: 98%;
    margin: 10px;
    font-size: 1.4vw
}

section{
    display: flex;
    flex-wrap: wrap;
    padding: 10px;
    justify-content: space-evenly;
}


main > section > img{
    width: 47%;
    margin: 20px 0px;
    border: grey solid 3px
}

article, main, footer{
    width: 90%;
    margin: 20px auto
}

footer{
    color: grey
}

img[id="pag0"]{
    width: 100%;
}

img[id="stup"],img[id="twitter"],img[id="email"]{
    display: none
}

@media screen  and (min-width: 576px){
    img[id="stup"]{
        display: inline;
    }

    section{
        justify-content: center;
    }

    main > section > img{
        width: 30%;
        border: 1px solid grey;
        margin: 10px 0px
    }
}

@media screen and (min-width: 1000px){
    section{
        width: 28%;
    }

    img[id="pag0"]{
        width: 68%;
    }

    main > section > img{
        width: 48%
    }

    img[id="twitter"],img[id="email"]{
        display: inline;
    }

}