h1 {
    margin-top: 1.5rem;
}
canvas {
    margin: 0 auto;
}
input[type="text"] {
    width: 95%;
    border-top: none;
    border-left: none;
    border-right: none;
}
input[type="text"],
button {
    margin-bottom: 1.5rem;
}
footer {
    margin-top: 3rem;
}
.main {
    margin-top: 2rem;
    margin-bottom: 4rem;
    margin-left: auto;
    margin-right: auto;
    width: 85vw;
}
nav.main {
    margin-bottom: 0;
}
@media (min-width: 1280px) {
    .main {
        width: 65vw;
    }
}
.preview {
    padding: 0.8rem;
    margin-bottom: 10px;
}