.benefit-list{
    display: flex;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 200px auto;
    justify-content: space-between;
}

.card{
    width: 310px;
    height: 430px;
    background: #C0D2E5;;/*背景色*/
    margin: 50px 0;
    border-radius: 10px;

    opacity: 0;
    transform: translateY(30px);
    transition: opacity 3s ease-out, transform 3s ease-out;
}

.card.is-animated{
    opacity: 1;
    transform: translateY(0);
}

.card-icon{
    width: 150px;
    height: 150px;
    border-radius: 50%;
    background: #fff;
    margin: 20px auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-title{
    font-size: 24px;
    text-align: center;
    color: #808080;
}

.card-txt{
    width: 250px;
    text-align: center;
    margin: 0 auto;
    color: #808080;
}