@import url("https://fonts.googleapis.com/css2?family=Roboto:ital,wght@0,300;0,400;0,700;1,300;1,400;1,700&family=Viaoda+Libre&display=swap");

*,
*::before,
*::after {
    box-sizing: border-box;
    padding: 0;
    margin: 0;
}
html {
    font-family: "Roboto", sans-serif;
    font-size: 1rem;
    color: #000;
    line-height: 1.6rem;
    margin: 0 auto;
    /* padding: 0 2rem; */
}
body {
    min-height: 100vh; /* THIS is BECAUSE of the sticky FOOTER */
    display: flex; /* THIS is BECAUSE of the sticky FOOTER */
    flex-direction: column; /* THIS is BECAUSE of the sticky FOOTER */
}

footer {
    background-color: #ffcc00;
    display: flex;
    /* justify-content: space-between; */
    align-items: center;
    /* min-height: 100%; */
    padding: 0 2rem;
    justify-content: center;
    margin-top: auto;
    text-align: center;
}
footer .container {
    padding: 1rem;
}
h1,
h2,
h3,
h4 {
    font-family: "Viaoda Libre", cursive;
    line-height: 2rem;
    margin: 2rem 0 3rem 0;
    text-align: center;
}
/* main .container h1, main .container ul {
    margin: auto 3em;
} */
main section {
    margin: auto 3em 2em 3em;
    /* background: url("../imgs/operativni_sistemi_375x667.webp") no-repeat; */
}
main section img {
    margin-top: 1em;
    margin-bottom: 1em;
    border-radius: 15px;
    width: 100%;
}
a {
    text-decoration: none;
    color: #000eff;
}
#logo {
    padding-top: 2em;
    width: 60vw;
}
a h3 {
    font-size: 10vw;
    padding-bottom: 1em;
    color: #000eff;
}
.link {
    color: #000eff;
}
img {
    width: 100%;
}
nav ul {
    line-height: 4em;
}
section ul li {
    margin-left: 2rem;
}

/* ====== FOR LESS THAN 600px ====== */
@media (max-width: 37.5em) {
    #tel_rest {
        display: none;
    }
    .show_on_TABLET,
    .show_on_DESKTOP {
        display: none;
    }
}

/* ====== FOR MORE THAN 601px AND LESS THAN 901px, THAT IS 601 TILL 900px ====== */
@media (min-width: 37.5625em) and (max-width: 56.25em) {
    #tel_rest {
        display: none;
    }
    .show_on_PHONE,
    .show_on_DESKTOP {
        display: none;
    }
    #logo {
        width: 40vw;
    }
}

/* ====== FOR MORE THAN 901px ====== */
@media (min-width: 56.3125em) {
    #tel_phone_tablet {
        display: none;
    }
    .show_on_PHONE,
    .show_on_TABLET {
        display: none;
    }

    .container,
    main,
    footer .container {
        max-width: 75em;
        margin: 0 auto;
    }
    main section {
        margin: auto 6em;
    }

    #logo {
        width: 40vw;
    }
}