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

body, html {
    height: 100vh;
    text-align: center;
    overflow-x: hidden;
}

h1 {
    font-family: Cambria, Cochin, Georgia, Times, 'Times New Roman', serif;
    font-size: 2.5rem;
    margin-top: 10px;
    margin-bottom: 14px;
}

#backdrop {
    display: flex;
    justify-content: center;
    align-items: center;
    background: url("/games/backgrounds/stars.jpg");
    border: 6px solid black;
    height: 80%;
}

#puzzle {
    width: 400px;
    height: 400px;
    display: grid;
    grid-template-columns: repeat(4,100px);
    grid-template-rows: repeat(4,100px);
    background-color: transparent;
}

button {
    user-select: none;
    background-color: hsl(57 92 90);
    font-size: 1.5rem;
    border: 2px solid black;
    width: 100px;
    height: 100px;
}

#b16 {
    background: rgb(251 209 162 / 80%);
    border: 2px solid black;
    width: 100px;
    height: 100px;
}

/* Only legal moves change color on hover*/
.leg button:hover {
    background: hsl(37 92 82);
}

#footer {
    margin-top: 6px;
}

a {
    padding: 0 1px 0 1px;
}