使用HTML和CSS设计记分板

<div class="scoreboard">
  <h1>记分板</h1>
  <div class="score">
    <button id="decrease">-</button>
    <span id="score">0</span>
    <button id="increase">+</button>
  </div>
</div>

.scoreboard {
  background-color: #f2f2f2;
  padding: 20px;
  text-align: center;
}

h1 {
  font-size: 24px;
  color: #333;
}

.score {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 20px;
}

button {
  background-color: #4caf50;
  color: #fff;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
}

button:hover {
  background-color: #45a049;
}

#score {
  font-size: 48px;
  margin: 0 20px;
}