* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

body {
    background-color: #f8f9fa;
}

@media (min-width: 600px) {
    body {
        background-color: #e9ecef;
    }
}

@media (min-width: 1024px) {
    body {
        background-color: #dee2e6;
    }
}

header { grid-area: zaglavlje; }
nav { grid-area: navigacija; }
section { grid-area: sekcija; }
article { grid-area: clanak; }
aside { grid-area: sa-strane; }
footer { grid-area: podnozje; }

.grid-kontejner {
    display: grid;
    grid-gap: 10px;
    padding: 10px;
    width: 100%;
    grid-template-columns: 100%;
    grid-template-areas:
        "zaglavlje"
        "navigacija"
        "sekcija"
        "clanak"
        "sa-strane"
        "podnozje";
}

@media (min-width: 1024px) {
    .grid-kontejner {
        grid-template-columns: 1fr 1fr 1fr;
        grid-template-areas:
            "zaglavlje   zaglavlje   zaglavlje"
            "navigacija  sekcija     sekcija"
            "clanak      clanak      sa-strane"
            "podnozje    podnozje    podnozje";
    }
}

header {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('a.jpg');
    background-size: cover;
    background-position: center;
    height: 20vh;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #ffffff;
    text-align: center;
}

nav {
    background-color: #dc3545;
    padding: 15px;
}

nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

nav ul li a {
    color: #ffffff;
    text-decoration: none;
    font-weight: bold;
}

nav ul li a:hover {
    color: #ffc107;
}

@media (min-width: 600px) {
    nav ul {
        flex-direction: row;
        justify-content: space-around;
    }
}

section {
    background-color: #ffc107;
    padding: 20px;
}

.slike-niz {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

@media (min-width: 768px) {
    .slike-niz {
        flex-direction: row;
    }
}

.kartica-slike {
    flex: 1;
    position: relative;
    background: #ffffff;
    padding-bottom: 10px;
    border: 2px solid #212529;
}

.kartica-slike img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.kartica-slike h3 {
    text-align: center;
    padding: 10px 0;
    background-color: #212529;
    color: #ffffff;
}

.kartica-slike p {
    text-align: justify;
    padding: 10px;
    color: #212529;
}

.kartica-slike a {
    text-decoration: none;
    display: block;
}

article {
    background-color: #0d6efd;
    padding: 20px;
    color: #ffffff;
}

video {
    width: 100%;
    margin-top: 10px;
    border: 2px solid #ffffff;
}

aside {
    background-color: #198754;
    padding: 20px;
    font-style: italic;
    color: #ffffff;
    font-weight: bold;
    border: 2px dashed #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

footer {
    background-color: #0a58ca;
    color: #ffffff;
    height: 10vh;
    width: 100%;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.drustvene-mreze {
    display: flex;
    align-items: center;
    gap: 10px;
}

.drustvene-mreze img {
    width: 30px;
    height: 30px;
    object-fit: contain;
}