body {
    text-rendering: auto;
}

* {
    box-sizing: border-box;
}

div {
    display: block;
    unicode-bidi: isolate;
}

#app {
    padding: 10px;
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    align-items: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    justify-content: center;
    -webkit-box-orient: vertical;
    -webkit-box-direction: normal;
    -ms-flex-direction: column;
    flex-direction: column;
    height: 100%;
    -webkit-user-select: none;
    user-select: none;
}

.aplayer {
    width: 600px;
    max-width: 100%;
    margin: 20px 0 40px;
}

h1 {
    margin: 0;
    margin-top: -10px;
    font-weight: normal;
    font-size: 40px;
    letter-spacing: 1px;
}

h3 {
    margin-top: 20px;
    color: #999;
    font-weight: normal;
    letter-spacing: 1px;
}

#jsonSelect {
    -webkit-appearance: none;  /* 去掉默认的浏览器样式 */
    -moz-appearance: none;     /* Firefox */
    appearance: none;          /* 标准化 */
    width: 200px;
    padding: 10px 35px 10px 15px; /* 上下填充和右侧的箭头空间 */
    font-size: 14px;
    background-color: #F5F5F5;
    border: 1px solid #ccc;
    border-radius: 5px;
    color: #333;
    cursor: pointer;
    position: relative; /* 为伪元素的箭头定位 */
    transition: all 0.3s ease;
}

/* 设置下拉箭头 */
#jsonSelect::after {
    content: '\25BC';  /* Unicode 字符的下箭头 */
    font-size: 10px;
    color: #333;
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none; /* 让箭头不影响点击 */
}

/* 鼠标悬停时，改变下拉框的边框和背景颜色 */
#jsonSelect:hover {
    border-color: #F57F17;
    background-color: #fff;
}

/* 设置选项样式 */
#jsonSelect option {
    padding: 10px;
    font-size: 16px;
    background-color: #fff;
    color: #333;
}

#jsonSelect option:hover {
    background-color: #F57F17;
    color: #fff;
}