body {
    margin: 0px;
    background-color: #333;
}

button {
    width: 100%;
    height: 10vh;
    font-size: 5vw;
    margin-top: 25px;
}

.progressBar {
    color: #000;
    background-color: #f1f1f1;
    border-radius: 30px;
    margin-top: 25px;
}

.progress {
    color: #fff;
    background-color: #4CAF50;
    text-align: center;
    padding: 0.01em 16px;
    border-radius: 30px;
    box-shadow: 0 0 40px #4CAF50;
}

#header {
    background-color: #212121;
    height: 10%;
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    z-index: 100;
}

#logo {
    font-size: 6vw;
    font-weight: bold;
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
}

#logo a {
    color: white;
    text-decoration: none;
}

#content {
    position: relative;
    top: 10%;
    height: 90%;
    color: white;
    margin: 10%;
    font-size: 4vw;
}

#level {
    font-size: 6vw;
    font-weight: bold;
    text-align: center;
    margin-top: 25px;
}

#exerciseVideo {
    width: 100%;
    margin-bottom: 20px;
}

#workoutName {
    text-align: center;
    font-size: 10vw;
    margin-bottom: 20px;
}

#exerciseName {
    text-align: center;
    font-size: 8vw;
    margin-bottom: 20px;
}

#exerciseLength {
    text-align: center;
    font-size: 5vw;
    margin-bottom: 20px;
}

@media screen and (min-width: 800px) {
    button {
        width: 50%;
        height: 10vh;
        font-size: 2vw;
        display: block;
        margin-left: auto;
        margin-right: auto;
    }

    #content {
        margin-top: 25px;
        margin-left: 25vw;
        margin-right: 25vw;
        font-size: 30px;
    }

    #logo {
        font-size: 50px;
    }

    #header {
        height: 100px;
    }

    #exerciseVideo {
        width: 50%;
        display: block;
        margin-left: auto;
        margin-right: auto;
    }

    #workoutName {
        font-size: 50px;
    }

    #exerciseName {
        font-size: 40px;
    }
    
    #exerciseLength {
        font-size: 30px;
    }

    #level {
        font-size: 50px;
    }
}