HTML {
font-size: 12pt;
font-family: Charter, 'Bitstream Charter', 'Sitka Text', Cambria, serif;
}

BODY {
margin: 0px;
}

header, footer, main {
max-width: 800px;
box-sizing: border-box;
padding: 1em;
}

header {
background: black;
color: yellow;

h1,h3 {
    margin: 0.5em auto;
    text-align: center;
    font-family: sans-serif;
}
}

main {
background: red;
color: white;
}

footer {
    background-color: yellow;
}

main > * {
text-align: center;
display: block;
margin: 0;
}

div#buttons {
margin: 1em 1em 1em 1em;
display: grid;
font-size: 1.5em;
background-color: red;
grid-gap: 5px;
grid-template-columns: 1fr 1fr 1fr;   

}

#dashboard {
    display:grid;
    margin: 2em 0.5em 1em;
    grid-template-columns: 1fr 1fr 1fr;
    font-size: 1.9em;
    grid-gap: 0.3em;        
}

#result {
    border-radius: 24px;
    border: 4px solid black;
    background-color: gray;
}

#result.ok {
    background-color: green;
    color: black;
}

#result.ko {
    background-color: #a01;
    color: white;
}

#label {
    font-size: 2.3em;
    font-weight: bold;
    color: white;
    font-family: sans-serif;
    margin: 0.8em 0 0.5em;
    letter-spacing: -1px;
}

#label_trans {
    font-size: 1.7em;
    font-weight: normal;
    font-style:italic;
    color: white;
    font-family: sans-serif;
    margin: 0.3em 0 1.1em;

}

#score {
    background-color: yellow;
    color: black;
    border-radius: 24px;
    border: 4px solid black;
}

#high_score {
    background-color: black;
    color: red;
    border-radius: 24px;
    border: 4px solid yellow;
}

div#buttons button {
display: block;
font-size: 1.3em;
font-weight: bold;
background-color: yellow;
border-radius: 12px;
}

#container {
    margin: 0 auto;
    height: 100vh;
    width: 100%;
    max-width: 800px;
    display: grid;
    grid-template-rows: 0.2fr 1fr 0.2fr;
}

DIALOG {
    font-family: sans-serif;
    border: 4px solid yellow;
    border-radius: 12px;
    background-color: black;
    color: yellow;
    font-size: 1.2em;

}

DIALOG SPAN {
        background-color: yellow;
        padding: 1px;
        border: 1px solid red;
        border-radius:6px;
        font-weight: bold;
        color: black;
        
    }
DIALOG BUTTON {
        display: block;
        width: 90%;
        margin: 1em auto;
        font-size:1.2em;
        background-color: red;
        color: yellow;
        font-weight: bold;
    }

::backdrop {
  background-image: linear-gradient(
    45deg,
    black,
    red,
    yellow
  );
  opacity: 0.75;
}        

dialog[open] {
  animation: fadein 0.4s ease-in forwards;
}

@keyframes fadein{
  0%{
    opacity:0;
  }
  100%{
    opacity:1;
  }
}