@font-face {
    font-family: 'NanumSquareNeo';
    src: url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-bRg.eot);
    src: url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-bRg.eot?#iefix) format("embedded-opentype"), url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-bRg.woff) format("woff"), url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-bRg.ttf) format("truetype");
}

@font-face {
    font-family: 'NanumSquareNeoExtraBold';
    src: url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-dEb.eot);
    src: url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-dEb.eot?#iefix) format("embedded-opentype"), url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-dEb.woff) format("woff"), url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-dEb.ttf) format("truetype");
}

@font-face {
    font-family: 'NanumSquareNeoHeavy';
    src: url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-eHv.eot);
    src: url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-eHv.eot?#iefix) format("embedded-opentype"), url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-eHv.woff) format("woff"), url(https://hangeul.pstatic.net/hangeul_static/webfont/NanumSquareNeo/NanumSquareNeoTTF-eHv.ttf) format("truetype");
}

html {
    width: 100%;
    height: 100%;
}

body {
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    margin: 0;
    font-family: "NanumSquareNeo", sans-serif;
    font-weight: bold;
    background-color: #212121;
    color: #fff;
    align-items: center;
}

body h1 {
    font-family: "NanumSquareNeoHeavy";
    text-align: center;
}

#main div {
    margin-top: 10px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
}

#main label {
    margin-right: 10px;
    vertical-align: middle;
}

input {
    width: 200px;
    border-radius: 100px;
    border-color: #ffffff00;
}

button {
    transition: .2s;
    width: 200px;
    height: 32px;
    border-radius: 100px;
    border-color: #ffffff00;
}

button:hover {
    background-color: #48FFA7;
    color: #fff;
}