app.css

body {
  background: #d5d5d5; 
  font-family: arial;
  color: #FAFAFA;
  text-transform: uppercase;
}

.scoreboard {
  background: #333;
  width: 700px;
  margin: 70px auto;
  box-shadow: 0 4px 0px #333;
  border-radius: 15px;

}

.header {
  padding: 5px 10px;
  text-align: center;
  display: flex;
  align-items: center;
  background-color: #222;
  border-radius: 15px 15px 0 0;
  border-bottom: solid 2px #444;
}

.header h1 {
  flex-grow: 1;
  font-size: 1.5em;
  letter-spacing: 3px;
  font-weight: normal;
}

.header .stats,
.header .stopwatch {
  width: 170px;
}

.stats {
  margin-top: 0;
  font-weight: normal;
}

  .stats td:first-child {
    text-align: right;
    font-weight: normal;
    letter-spacing: 2px;
    color: #666;
    font-size: .7em;
  }

  .stats td:last-child {
    text-align: left;
  }

.stopwatch {
  padding: 15px 10px 5px 10px;
  margin: -5px -10px -5px 10px;
  background: #2f2f2f;
  border-radius: 0 15px 0 0;
}

  .stopwatch-time {
    font-family: monospace;
    font-size: 2em;
  }

  .stopwatch button {
    margin: 8px 5px;
    background-color: #222;
    border-radius: 5px;
    padding: 7px 8px;
    border: none;
    color: #999;
    letter-spacing: 2px;
    font-weight: bold;
    text-shadow: none;
    text-transform: uppercase;
  }

  .stopwatch button:hover {
    background: #4b71b5;
    color: #fafafa;
    cursor: pointer;
  }

  .stopwatch h2 {
    font-size: .6em;
    margin: 0;
    font-weight: normal;
    letter-spacing: 2px;
    color: #666;
  }

.player {
  display: flex;
  font-size: 1.2em;
  border-bottom: solid 2px #444;
  letter-spacing: 2px;
}

  .remove-player {
    visibility: hidden;
    margin-right: 10px;
    color: #e57373;
    cursor: pointer;
  }

  .player-name:hover .remove-player {
    visibility: visible;
  }

  .player-name {
    flex-grow: 1;
    padding: 20px 10px 10px 10px;
  }

  .player-score {
    width: 190px;
    background: blue;
  }

  .counter {
    display: flex;
  }

  .counter-action {
    border: none;
    font-weight: bold;
    color: #FAFAFA;
    display: block;
    padding: 20px 20px;
    cursor: pointer;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
  }

  .counter-action.increment {
    background: #66BB6A;
  }

  .counter-action.increment:hover {
    background: #549d59;
    cursor: pointer;
  }

  .counter-action.decrement {
    background: #ef5350;
  }

  .counter-action.decrement:hover {
    background: #c44442;
    cursor: pointer;
  }

  .counter-score {
    flex-grow: 1;
    background: #2b2b2b;
    color: #FAFAFA;
    text-align: center;
    font-family: monospace;
    padding: 10px;
    font-size: 2em;
  }


.add-player-form form {
  display: flex;
  background-color: #222;
  border-radius: 0 0 20px 20px
}

  .add-player-form input[type=text] {
    flex-grow: 1;
    border-width: 0 0 1px 0;
    margin: 15px 10px 15px 15px;
    padding: 10px;
    border-radius: 5px;
    background-color: #333;
    border-style: none;
    text-shadow: none;
    text-transform: uppercase;
    color: #999;
    letter-spacing: 2px;
    outline: none;
  }

  .add-player-form input[type=text]::-webkit-input-placeholder{
    color: #666;
    letter-spacing: 2px;
  }

  .add-player-form input[type=text]:focus{
    background-color: #444;
  }

  .add-player-form input[type=submit] {
    display: block;
    font-size: .6em;
    margin: 15px 15px 15px 0; 
    padding: 10px;
    background-color: #333;
    border-radius: 5px;
    border: none;
    color: #999;
    letter-spacing: 2px;
    font-weight: bold;
    text-shadow: none;
    text-transform: uppercase;
  }

  .add-player-form input[type=submit]:hover{
    background: #4b71b5;
    color: #fafafa;
    cursor: pointer;
  }