body {
    min-height: 100vh;
    max-width: 1080px; 
    margin: 0 auto !important; 
    float: none !important; 
    font-family: sans-serif;
    font-size: min(4vw,4vh);
    touch-action: manipulation;
    user-select: none;
    touch-action: manipulation;
    -webkit-tab-highlight-color: rgb(0, 0, 0, 0); /*no blue flashes*/
    -webkit-touch-callout: none;
    -webkit-text-size-adjust: none;
    -webkit-user-select: none;

}
main, header, footer, section {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
}
header {
    padding: 2em;
}
header>h1 {
    font-family: Georgia, serif;
    text-transform: uppercase;
    font-size: 2.5em;
    text-shadow: 1px 1px silver;
}
h1, h2, h3 {
    margin:0.25em;
}
section {
    margin: 1em;
}
.entry {
    text-transform: uppercase;
}
.entry div {
    display: flex;
    align-items: stretch;
    gap: 1em;
}
.entry span {
    font-size : 2rem;
    font-weight: bold;
    border: 1px black solid;
    display: flex;
    height:1.5em;
    width: 1.5em;
    text-align: center;
    align-items: center;
    justify-content: center;
    border-radius: 3px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}
.command {
    background: darkgray;
    color: white;
}
.keyboard {
    gap: 0.25em;
}

.solution {
    font-size: 3rem;
    font-weight:bold;
    color: #F8620D;
    text-transform: uppercase;
}
.row {
    display: flex;
    gap: 0.25em;

}
.keyboard button {
    font-size: 1rem;
    width: 2.125rem;
    height: 2.125rem;
    color: black;
    text-transform: uppercase;
    padding: .25em;
    border-radius: 3px;
    border: 1px solid black;
    border-bottom: 2px solid black;
    border-right: 2px solid black;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}
.keyboard button:active {
    background: black;
    color: white;
    border-style: none;
}
.keyboard button.exclude {
    background: red;
    color: white;
}
.explanation {
    width: 50vw;
    font-size: .75em;
}
footer {
    font-size:x-small;
}