@import url('https://fonts.googleapis.com/css2?family=Nerko+One&family=Roboto+Mono:wght@100;200;300;400;500;600;700&display=swap');

*
{
    margin: 0;
    padding: 0;
    font-family: 'Nerko One', cursive;
}

body
{
    width: 100%;
    height: 100vh;
    background: #161616;
}

main
{
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 15px 0;
}

main > span
{
    color: #fff;
    font-size: 40px;
    font-weight: 700;
    letter-spacing: 8px;
    text-shadow: 2px 2px 4px #000000; 
    animation: rainbow 10s infinite; 
}
@keyframes rainbow
{	0%{color: orange;}	
   10%{color: purple;}	
     20%{color: red;}
   30%{color: CadetBlue;}
     40%{color: yellow;}
   50%{color: coral;}
     60%{color: green;}
   70%{color: cyan;}
   80%{color: DeepPink;}
   90%{color: DodgerBlue;}
     100%{color: orange;}
}

main > .zawartosc
{
    width: 80%;
    display: flex;
    align-items: center;
    flex-direction: column;
    gap: 20px 0;
}

main > .zawartosc .kody
{
    display: flex;
    gap: 0 300px;
}

main > .zawartosc > .kody > .html,
main > .zawartosc > .kody > .css
{
    width: 600px;
    height: 350px;
    display: flex;
    align-items: center;
    flex-direction: column;
    border: 4px solid #5f9fff;
    border-radius: 5px;
    background: #ddd;
    overflow: hidden;
    font-weight: 700;
    font-size: 22px;
}

main > .zawartosc > .kody > .html > span,
main > .zawartosc > .kody > .css > span,
main > .zawartosc > .wynik > span
{
    margin-top: 3px;
    margin-bottom: 10px;
}

main > .zawartosc > .kody > .html > hr,
main > .zawartosc > .kody > .css > hr,
main > .zawartosc > .wynik > hr
{
    width: 100%;
}

main > .zawartosc > .kody > .html > textarea,
main > .zawartosc > .kody > .css > textarea
{
    width: 94%;
    height: 100%;
    resize: none;
    outline: none;
    border: none;
    padding: 10px;
    font-size: 16px;
    font-family: 'Roboto Mono', monospace;
}

main > .zawartosc > .wynik
{
    width: 100%;
    height: 400px;
    display: flex;
    align-items: center;
    flex-direction: column;
    border: 4px solid #5f9fff;
    border-radius: 5px;
    background: #ddd;
    overflow: hidden;
    font-weight: 700;
    font-size: 22px;
}