2 回答

TA貢獻1891條經驗 獲得超3個贊
您的代碼中有一個錯誤的括號:
#appetizer
{
background-color: #009933;
{ /* wrong bracket */
代替
#appetizer
{
background-color: #009933;
}

TA貢獻1828條經驗 獲得超3個贊
這是一個工作版本,為簡潔和外觀做了一些修改。
.d1 { text-align: center; width: 20%; height: 100%; float: left; }
.p1 { margin-top: 65px; }
#breakfast { background-color: red; }
#sweets { background-color: skyblue; }
#appetizer { background-color: #009933; } /* <-- The issue was here */
#food { background-color: lime; }
#drink { background-color: blue; }
<div id="navigationbar">
<div class="d1" id="breakfast">
<p class="p1"> Breakfast </p>
</div>
<div class="d1" id="sweets">
<p class="p1"> Sweets </p>
</div>
<div class="d1" id="appetizer">
<p class="p1"> Appetizer </p>
</div>
<div class="d1" id="drink">
<p class="p1"> Drink </p>
</div>
<div class="d1" id="food">
<p class="p1"> Food </p>
</div>
</div>
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