body {
    font-family: "微軟正黑體", sans-serif;
}

.tab {
    list-style-type: none;
    padding: 0;
    margin: 0;
    display: flex;
    border-bottom: 2px solid #ccc;
}

.tab li {
    flex: 1;
}

.tab a {
    display: block;
    padding: 10px;
    text-align: center;
    text-decoration: none;
    background: #f1f1f1;
    color: #333;
    border-right: 1px solid #ccc;
}

.tab a.active {
    background: #ddd;
    font-weight: bold;
}

.tab-content {
    display: none;
    padding: 15px;
}

.tab-content.active {
    display: block;
}

button {
    font-size: 13px;
    width: 150px;
    height: 55px;
    background-color: #DDD;
    border: 1px solid #888;
    border-radius: 15px;
}

button:active {
    background-color: #BBB;
    border: 2px solid #000;
}

#messages, #OTAmessages {
    max-height: 300px; /* 設定最大高度 */
    overflow-y: auto;  /* 超過時顯示垂直滾動條 */
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    background-color: #f9f9f9;
    list-style-type: none; /* 移除 <ul> 預設的點 */
    margin: 0;
    padding-left: 10px;
}