* {
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
}


#cv {
    background-image: radial-gradient(rgba(0, 0, 0, 0.562), black);
    display: block;
}

.header {
    color: white;
    background-color: black;
    padding: .5em;
}

.heading {
    font-size: 2rem;
    text-align: center;
    letter-spacing: 2px;
    margin: 5px;
}

.control {
    display: flex;
    flex-wrap: wrap;
    list-style-type: none;
    margin: 5px;
    margin-bottom: 0;
    justify-content: center;
    align-items: center;
}


.control > li > select {
    background-color: rgb(147, 182, 147);
    color: white;
    border-radius: 10px;
    margin: 0.3em 0.2em;
    padding: 0.2em 0.75em;
    border: 1px solid black;    
}

button {
    background-color: rgb(147, 182, 147);
    color: white;
    border-radius: 10px;
    margin: 0.3em 0.2em;
    padding: 0.25em 0.75em;
    border: 1px solid black;
    
}

button:hover:enabled {
    cursor: pointer;
    background-color: rgba(147, 182, 147, 0.699);
}


button:disabled {
    background-color: rgba(147, 182, 147, 0.671);
    color: rgba(255, 255, 255, 0.397);
}

#play {
    width: 6em;
}