/* GLOBAL STYLES */

body {
    background-color: #000;
    font-family: helvetica, sans-serif;
    color: #fff;
    letter-spacing: 2px;
    line-height: 140%;
}

input[type=text],
input[type=number] {
    background-color: #000;
    border: 2px solid #fff;
    border-radius: 5px;
    color: #fff;
}

hr {
    border: 1px solid #fff;
}

button {
    background: #fff;
    border: 2px solid #fff;
    border-radius: 5px;
    font-size: 20px;
    padding: 10px;
    margin: 5px 0;
    letter-spacing: 2px;
    cursor: pointer;
    transition: 0.15s;
}

button:hover {
    background-color: #000;
    color: #fff;
    transition: 0.15s;
}

.hidden {
    display: none;
}

/* SPECIFIC ELEMENTS */

#question {
    margin: 0 auto;
    text-align: center;
    font-size: 3em;
}

#solution {
    text-align: center;
    width: 2em;
    font-size: 1em;
}

#overlay {
    max-height: 100vh;
    max-width: 100vw;
    position: absolute;
    background: rgba(0, 0, 0, 0.5);
    top: 0;
    right: 0;
    left: 0;
    bottom: 0;
    text-align: center;
    font-size: 3em;
    padding: 25vh 10%;
    line-height: 1.2em;
}

#overlay::before {
    filter: blur(5px);
}