body {
    font-family: Arial, sans-serif;
    background-color: #0d1117;
    color: white;
    padding: 20px;
}

#app {
    max-width: 400px;
    margin: 0 auto;
}

select, input, button {
    display: block;
    width: 100%;
    margin-bottom: 10px;
    padding: 10px;
    box-sizing: border-box;
}

.set {
    background-color: #21262D;
    padding: 10px;
    margin-bottom: 10px;
    border-radius: 5px;
}

.warmup {
    border: 2px solid #161B22; /* add border to warmup sets */
}

.rep {
    background-color: #161B22;
    margin-top: 10px;
    padding: 10px;
    border-radius: 5px;
}

.done {
    background-color: green;
}