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

:root{
    --dark-color: #253237;
    --dark-lighter: #5c6b73;
    --midtone: #9db4c0;
    --midtone-lighter: #c2dfe3;
    --highlight: #ebfcfd;
}

body{
    background-color: var(--midtone);
    color: var(--dark-color);
    font-family: Arial, Helvetica, sans-serif;
}

.container{
    width: 90%;
    max-width: 1200px;
    margin: 20px auto;
}

.hero{
    background-color: var(--dark-color);
    color: var(--highlight);
    padding: 20px 20px 20px 20px;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    min-height: 160px;
}

.hero-text{
    width: 100%;
}

.hero-text p{
    font-size: 19px;
    margin: 0;
}

h1{
    margin: 0 0 20px;
    font-family: Georgia, 'Times New Roman', serif;
    font-size: 42px;
    line-height: 1.1;
}

.photo-wall{
    padding: 25px;
    background-color: var(--midtone-lighter);
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.photo-wall img{
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: cover;
    box-shadow: 3px 3px 7px rgba(37, 50, 55, 0.5);
}

footer{
    background-color: var(--dark-color);
    color: var(--highlight);
    text-align: center;
    padding: 30px;
}

footer p{
    margin-bottom: 10px;
}

footer a{
    display: inline-block;
    color: var(--midtone-lighter);
}

@media (min-width: 600px) {
    .photo-wall{
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 900px) {
    .photo-wall{
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1200px) {
    .photo-wall{
        grid-template-columns: repeat(4, 1fr);
    }
}