.w3-background{
    background-image: linear-gradient(45deg, rgb(250, 139, 255) 0%, rgb(43, 210, 255) 52%, rgb(250, 139, 255) 98%);
}
#slide {
    width: 100%;
    height: auto;
    white-space: nowrap;
}

#slide img {
    display: inline-block;
    width: 100%;
    height: auto;
    vertical-align: top;
}

.slide-animation {
    transition: transform 1s ease-in-out;
}
#banner{
    position: relative;
    overflow: hidden;
}
.positon-slide{
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translate(-50%, 50%);
    -ms-transform: translate(-50%, 50%);
    overflow: hidden;
    box-shadow: 0 5px 3px 0 rgba(23, 137, 73, 0.2), 0 4px 10px 0 rgba(9, 49, 25, 0.3);
    border: 3px solid green;
}
.w3-service{
    display:grid;
    grid-template-columns: 1fr 1fr 1fr 1fr; /* chia làm 4 cột */
    grid-column-gap: 20px; /* khoảng cách giữa các cột */
    grid-row-gap: 20px;
    text-align: left;
}
.w3-aside-image{
    padding-left: 10px;
}
.w3-aside-image:first-child{
    padding-bottom: 10px;
}

@media (max-width: 800px) {
    .positon-slide{
        width: 60%;
    }
}
@media (min-width: 801px) {
    .positon-slide{
        width: 45%;
    }
}
.w3-image-text {
    display: flex;
}

.w3-column-haft {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}