* {
    box-sizing: border-box;
}

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: aliceblue;
    margin: 0px;
    padding: 0px;
}

header {
    background-color: rgb(32, 149, 251);
    color: aliceblue;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr 1fr;
    grid-template-rows: 120px;
}

header nav {
    grid-column: 2/4;
    text-align: center;
}

header nav ul {
    list-style: none;
    margin: 0px;
    padding: 0px;
    margin-top: 50px;
}

header nav ul li {
    display: inline;
    margin: 10px;
}

header nav ul li a {
    color: aliceblue;
    text-decoration: none;
    font-size: 1.3em;
}

header nav ul li a:hover {
    text-decoration: underline;
}

header #buscador {
    grid-column: 4/6;
}

header #buscador input {
    border: 1px solid black;
    width: 80%;
    margin: auto;
    margin-top: 43px;
    padding: 5px;
    font-size: 1.2em;
}

main {
    padding: 25px;
}


main .productos_{
    display: none;
}

main .productos {
    border-radius: 6px;
    border: 1px solid rgb(32, 149, 251);
    padding: 15px;
    margin-top: 20px; 
}

main .productos h2 {
    background-color: rgb(32, 149, 251);
    color: white;
    padding: 10px;
    border-radius: 10px 0px 10px 0px;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

main .productos ul {
    list-style: none;
    margin: 0px;
    padding: 0px;
    gap: 10px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
}

main .productos ul li {
    background-color: white;
    padding: 15px;
    border-radius: 6px;
}

main .productos ul li article img {
    max-width: 300px;
    display: block;
    margin: auto;
}

.cantidades {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
}

.cantidades fieldset {
    border-radius: 6px;
    border: 1px solid rgb(32, 149, 251);
}

.cantidades fieldset legend {
    color: rgb(32, 149, 251);
}

.cantidades select {
    width: 100%;
    font-size: 1.3em;
}

#datos fieldset {
    border-radius: 6px;
    border: 1px solid rgb(32, 149, 251);
    margin-top: 20px;
    background-color: rgb(197, 226, 250);
    text-align: center;
}

.inputs {
    width: 80%;
    display: block;
    margin: auto;
    border: 1px solid rgb(32, 149, 251);
    font-size: 1.2em;
    padding: 5px;
    margin-bottom: 4px;

}

.botones {
    display: block;
    margin: auto;
    border: 1px solid;
    border-radius: 6px;
    font-size: 1.5em;
    padding: 10px;
    margin-bottom: 8px;
    margin-top: 8px;
    background-color: rgb(32, 149, 251);
    color: white;
}

footer {
    background-color: black;
    min-height: 150px;
    padding: 55px;
}

footer ul {
    list-style: none;
    margin: 0px;
    padding: 0px;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    justify-items: center;
}

footer ul li {
    display: inline;
    text-align: center;
}

footer ul li a {
    color: white;
    font-size: 1.3em;
    text-decoration: none;
}


@media screen and (max-width : 640px) {

    header,
    footer {
        display: none;
    }

    main .productos ul {
        grid-template-columns: 1fr;
    }

    main .productos ul li article img {
        max-width: 150px;
    }
}

@media screen and (min-width : 640px) and (max-width : 1040px) {

    header,
    footer {
        display: none;
    }

    main .productos ul {
        grid-template-columns: 1fr 1fr;
    }

    main .productos ul li article img {
        max-width: 250px;
    }
}