header {
    color: #4caf50;
    text-align: center;
    font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
    font-size: 3em;
    border: 10px solid;
    border-image: linear-gradient(cyan, lightblue);
    border-image-slice: 1;
    margin-bottom: 100px;
}

body {
    margin: 4%;
    font-family: 'Trebuchet MS', 'Lucida Sans Unicode', 'Lucida Grande', 'Lucida Sans', Arial, sans-serif;
}

.flex-container {
    display: flex;
    width: 100%;
}

.gallery-item {
    box-shadow: 5px 5px 10px grey;
    width: 300px;
    height: auto;
    margin: 0 5% 5% 0;
}

.gallery-item img {
    width: 300px;
    height: 300px;
}


.gallery-item p {
    text-align: center;
    font-size: 24px;
    font-weight: 700;
    padding: 10px;
}

footer p {
    text-align: center;
    padding: 40px;
    background-color: azure;
}