.container-main{
    margin: 20px auto;
    max-width: 1440px;
    min-width: 375px;
    height: 600px;
    background-color: hsl(212, 45%, 89%);
    box-shadow: 10px 16px 10px #21212128;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container-card{
    background-color: hsl(0, 0%, 100%);
    width: 300px;
    min-height: 450px;  
    padding: 10px;
    border-radius: 10px;
    box-shadow: 5px 16px 10px #21212128;
    transition: transform 0.75s ease-in-out;
    transform: perspective(500px);
}

.box2{
    width: 270px;
    margin: 0 auto;
    text-align: center;
}

.text1>p{
    color: black;
    margin: 20px auto 10px auto;
    font-size: 24px;
    font-weight: 700;
}

.text2>p{
    color: hsl(216, 15%, 48%);
    margin: 0;
    font-size: 18px;
    font-weight: 400;
}

.container-card:hover{
    transform: perspective(500px) rotate3d(0, 2, -2, 6deg);
    animation: color-shift 1s ease-in-out infinite alternate;

    /* animation-fill-mode: forwards; giúp giữ nguyên trạng thái khi chạy xong keyframe */
}

@keyframes hover-card {
    0%{ background-color: #ffffff;}
    25%{ background-color: #f9fcd9;}
    50%{ background-color: #f6ff7e;}
    75%{ background-color: #f1ff2f;}
    100%{ background-color: #eeff00;}
}
@keyframes color-shift {
    0% {
        background: linear-gradient(45deg, #FFD700, #7CFC00);
    }
    25% {
        background: linear-gradient(45deg, #FFEC8B, #98FB98);
    }
    50% {
        background: linear-gradient(45deg, #FFFACD, #7CFC00);
    }
    75% {
        background: linear-gradient(45deg, #7CFC00, #FFD700);
    }
    100% {
        background: linear-gradient(45deg, #FFD700, #7CFC00);
    }
}