stopwatch.css

@font-face {
    font-family: 'BPdotsUnicase';
    src: url('./font/BPdotsUnicase-webfont.woff') format('woff');
    font-weight: normal;
    font-style: normal;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background: #333;
    color: white;
    text-transform: uppercase;
    font-family: 'BPdotsUnicase';
}
body {
    display:flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
#container {
    width: 480px;
    border:2px solid rgb(255, 255, 255);
    display:flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    border: 4px solid;
    padding: 30px;
    gap: 20px;
    background: #333;
    /* border-radius: 40px; */
    box-shadow: 0 0 25px #111;
    /* box-shadow: 5px 5px 15px 2px rgb(255, 255, 255), 5px 5px 15px 2px rgb(255, 255, 255); */
    border-image: linear-gradient(45deg,#333, dodgerblue, #333, dodgerblue) 1;
}
#buttons {
    display:flex;
    gap:5px;
}
button {
    padding: 5px 18px 5px 18px;
    /* border:3px solid rgb(240, 240, 240); */
    border: 3px solid #333;
    box-shadow: 0 0 8px #111;
    border-radius: 4px;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
}
#output {
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 70px;
}
button:hover {
    background: rgb(58, 58, 58);
}

h1 {
    text-shadow: 0 0 5px #111;
}

#headline {
    box-shadow: 0 0 25px #111;
    padding: 5px 20px 13px 20px;
    border-radius: 25% 25% 8% 8%;
    background: rgb(56, 56, 56);
}

#headline2 {
    box-shadow: 0 0 20px #111;
    padding: 5px 20px 13px 20px;
    border-radius: 8% 8% 25% 25%;
    background: rgb(56, 56, 56);
}

@media screen and (max-width: 500px){
    #container {
        width: 95%;
    }

    #output {
        font-size: 54px;
    }
}