body {
    position: relative;
    width: 1080px;
    margin: 0 auto;
    padding: 20px;
}

p {
  line-height: 1.5; 
}

.button {
    padding: 8px 20px 8px 20px;
    border-radius: 18px ;
    text-align: center;
    font-size: 14px;
    font-weight: normal;
    background: #0577c7;
    color: white;
    cursor: pointer;
    border: none;
}

/* 返回顶部按钮样式 */
.backTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 悬停效果 */
.backTop:hover {
    background-color: #0056b3;
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.4);
}

/* 点击效果 */
.backTop:active {
    transform: translateY(-1px);
}

/* 按钮隐藏样式 */
.backTop.hidden {
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}