body, input, button {
    font-family: "Source Sans 3", Helvetica, sans-serif;
    line-height: 1.6;
}

body {
    margin: 0;
    color: #555;
}

main {
    width: 100%;
    max-width: 60rem;
    margin: 0 auto;
    padding: 10rem 1rem 0 1rem;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin: 0 0 1.5rem 0;
}

p, input, li, textarea {
    font-size: 1.5rem;
    font-weight: 300;
}

p, ul {
    margin: 0 0 1.5rem 0;
}

a:hover {
    color: #f78;
}

a {
    transition: color 0.3s ease;
    text-decoration: none;
    color: #555;
    font-weight: 400;
}

footer {
    width: 100%;
    max-width: 60rem;
    margin: 0 auto;
    padding: 3rem 1rem;
    font-size: 1rem;
    font-weight: 300;
}

section.gallery {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    row-gap: 2.5rem;
    column-gap: 2.5rem;
    padding: 3rem 0;
}

a.tile {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 8rem 2rem;
    color: #fff;
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 0.25rem;
    position: relative;
    background-color: #0004;
    transition: background-color 0.7s ease;
}

a.tile:hover {
    background-color: #0000;
}

a.tile > img {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    z-index: -1;
    border-radius: 0.25rem;
}

input, button, textarea {
    outline: 0;
    border: 0;
    box-sizing: border-box;
}

input {
    box-shadow: inset 0 -1px 0 0 #555;
    color: #555;
}

input:focus {
    box-shadow: inset 0 -2px 0 0 #f78;
}

button {
    font-size: 1.25rem;
    padding: 1rem 1.75rem;
    border-radius: 0.25rem;
    font-weight: 900;
    letter-spacing: 0.25rem;
    background-color: #555;
    transition: background-color 0.7s ease;
    color: #fff;
    cursor: pointer;
}

button:hover {
    background-color: #f78;
}

textarea {
    width: 100%;
    resize: vertical;
    outline: 0;
    border-radius: 0.25rem;
    border: 1px solid #555;
}