body {
    background-color: #2a2b38;
    background-image: url('https://s3-us-west-2.amazonaws.com/s.cdpn.io/1462889/pat.svg');
    background-size: 50%;
}

.show-khung {
    display: block;
    width: 50%;
    background-image: url('../assets/images/chat.gif');
    background-repeat: no-repeat;
    background-size: 70% 350px; 
    background-position: center center; 
 
    border: 2px solid #ffeba7;
    box-shadow: 10px 10px 25px rgba(255, 235, 167, .2), -10px -10px 25px rgba(255, 235, 167, .2), 10px -10px 25px rgba(255, 235, 167, .2), -10px 10px 25px rgba(255, 235, 167, .2);
    display: block;
    margin: 0 auto;
    border-radius: 8px;
    overflow: hidden;
    /* áº¨n pháº§n áº£nh náº±m ngoÃ i khung hiá»ƒn thá»‹ */
}
.dayxuong {
    height: 8vw;
}
@media screen and (max-width: 992px) {
    .show-khung {
        width: 95%;
        background-size: 80% 145px; /* Chá»‰nh kÃ­ch thÆ°á»›c cao vÃ  tháº¥p á»Ÿ Ä‘Ã¢y */
    }
    .dayxuong {
        height: 78px;
    }
}

.slideshow-container {
    max-width: 1000px;
    position: relative;
    margin: auto;
}

.slide {
    display: none;
}

.slide-img {
    width: 100%;
    height: auto;
    border: 1px solid #ffeba7;
}

.slide-from-right {
    animation: slideRightToLeft 2s ease-in-out infinite;
}

@keyframes slideRightToLeft {
    0% {
        transform: translateX(100%);
        opacity: 0;
    }

    20% {
        transform: translateX(0);
        opacity: 1;
    }

    80% {
        transform: translateX(0);
        opacity: 1;
    }

    100% {
        transform: translateX(-100%);
        opacity: 0;
    }
}