body{
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    position: relative;
    overflow: hidden;
    color: aliceblue;
}
.bg-fade {
    position: fixed;
    z-index: -1;
    top: 0; left: 0; right: 0; bottom: 0;
    width: 100vw;
    height: 100vh;
    background-size: cover;
    background-position: center;
    transition: opacity 1.8s cubic-bezier(.77,0,.18,1);
    opacity: 1;
    pointer-events: none;
}
.bg-fade.next {
    opacity: 0;
}
#quote-container{
    display: flex;
	align-items: center;/*垂直居中*/
	justify-content: center;/*水平居中*/
    height: 100vh;

}

fieldset{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    font-size: 2rem;
    border: 1px solid #ccc;
    border-radius: 8px;
    padding: 50px;
    margin: 20px auto;
    width: 40vw;
    height: 40vh;
    background-color: rgba(0, 0, 0, 0.5);

    
}
fieldset div{
    text-align: center;
}

footer{
    position: absolute;
    width: 100%;
    padding: 1rem 0;
    bottom: 0;
     background-color: rgba(0, 0, 0, 0.5);
    text-align: center;
    margin-top: 20px;
    color: #ffffff;
}
#quote-text{
    font-size: 2rem;
    line-height: 1.6;
    color: #fff;
    text-align: center;
    margin-bottom: 20px;
}

a{
    color: #fff;
    text-decoration: none;
}