style.css

body {
    margin-left: 10%;
    margin-right: 10%;
    text-align: center;
    background-color: #0077e7;
    background-image: linear-gradient(cyan, #0077e7);
    background-attachment: fixed;
    font-family: 'Trebuchet MS', Verdana, Tahoma, sans-serif;
    font-size: 15pt;
}

body:hover {
    cursor: default;
}

h1 {
    display: inline-block;
    padding: 10px;
    background-color: #eff5;
    font-family: Righteous, Futura, Verdana, Tahoma, sans-serif;
    font-size: 35pt;
    border-radius: 20px;
}

button, input:not([type="color"]):not([type="checkbox"]) {
    text-align: center;
    font-family: 'Trebuchet MS', Verdana, Tahoma, sans-serif;
    background-color: azure;
    background-image: linear-gradient(azure, lightgrey);
    border-width: 2px;
    border-style: solid;
    border-color: black;
}

button:hover, input:hover {
    background-color: azure;
    background-image: none;
    cursor: pointer;
}

input:not([type="color"]):not([type="checkbox"]):hover {
    cursor: text;
}

.hidden {
    display: none;
    background-color: #eff5;
}

.box {
    display: inline-block;
    text-align: center;
    background-color: mintcream;
    font-family: Righteous, Verdana, Tahoma, sans-serif;
}

button, input:not([type="color"]):not([type="checkbox"]), .hidden, .box {
    padding: 14px;
    border-radius: 20px;
}

#notice {
    display: none;
    position: fixed;
    bottom: 1cm;
    left: 10%;
    width: 70%;
    padding: 5%;
    background-color: azure;
    border-radius: 30px;
    font-family: Verdana, Tahoma, sans-serif;
    font-size: 50pt;
    font-weight: bold;
}

/* ----- Viewport Responsiveness: ----- */

@media (max-width: 850px) {
    body {
        margin-left: 1%;
        margin-right: 1%;
        font-size: 12pt;
    }
    h1 {
        font-size: 27pt;
    }
    .snail_shell {
        stroke-width: 3px;
    }
    #notice {
        font-size: 20pt;
    }
}

@media (max-width: 280px) {
    h1 {
        font-size: 20pt;
    }
    #notice {
        font-size: 12pt;
    }
}

/* ----- FONTS: ----- */

@font-face {
    font-family: 'Righteous';
    font-style: normal;
    font-weight: 400;
    src: url(./fonts/Righteous.woff2) format('woff2');
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329, U+2000-206F, U+2074, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}