.prompt {
    position: fixed;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
}
.prompt>.prompt-bg {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .5);
}
.prompt>.prompt-content {
    position: absolute;
    left: 50%;
    top: 50%;
    width: 5.2rem;
    height: 2.2rem;
    margin-left: -2.6rem;
    margin-top: -1.1rem;
    line-height: 0.48rem;
    text-align: center;
    font-size: 0.42rem;
    background-color: #fff;
    box-shadow: 0 0.13rem 0.26rem rgba(0, 0, 0, .2);
    border-radius: 0.13rem;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.4rem 0.6rem;
}
.prompt {
    transition: all .5s;
    -webkit-transition: all .5s;
    visibility: hidden;
    opacity: 0;
}
.prompt.show {
    visibility: visible;
    opacity: 1;
}
.prompt>.prompt-content {
    transition: all .5s;
    -webkit-transition: all .5s;
    transform: translateY(2.66rem);
    -webkit-transform: translateY(2.66rem);
}
.prompt.show>.prompt-content {
    transform: translateY(0px);
    -webkit-transform: translateY(0px);
}