* {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
        font-family: Arial, Helvetica, sans-serif;
    }
    
    body {

        min-height: 100vh;
        
        padding: 20px;
    }
    
    .container {
        max-width: 1200px;
        width: 100%;
        position: relative;
        z-index: 1;

        
    }
    
    
    .banner-container {
        position: relative;
        width: 100%;
        max-width: 1200px;      
        aspect-ratio: 4 / 1;     
        overflow: hidden;
        box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    }

    .banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* or use 'cover' if you want to fill with cropping */
    display: block;
    }


    
    .banner-slide {
    background-color: rgb(125, 161, 178);
    position: absolute;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
    font-weight: bold;
    transition: transform 0.5s ease-in-out;

    background-size: cover; /* optional improvement */
    background-position: center;
    background-repeat: no-repeat;
    }

    
    



    
    .arrow {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        width: 35px;
        height: 35px;
       
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        z-index: 10;
        transition: all 0.3s ease;
    }
    
    .arrow:hover {
        
        background-color:rgb(54, 122, 153);
;
    }
    
    .arrow-left {
        left: 70px;
    }
    
    .arrow-right {
        right: 70px;
    }
    
    .arrow img {
        width:35px;
        
     
    }
    
    .indicators {
        position: absolute;
        bottom: 10px;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        gap: 10px;
        z-index: 10;
    }
    
    .indicator {
        width: 12px;
        height: 12px;
        border-radius: 50%;
        background: rgba(209, 207, 207);
        cursor: pointer;
        transition: all 0.3s ease;
        
    }
    
    .indicator.active {
        background: white;
    
        transform: scale(1.2);
    }
    
    
    
    pre {
        white-space: pre-wrap;
        line-height: 1.5;
    }


    .square {
        width:100%;
        height:50px;
        
        background-color: rgb(54, 122, 153);

    }



    .banner-lab-title {
        font-size:20px;
        font-weight: bold;
        padding-top:5px;
        
        color:white;
        text-align: center;


    }

    .banner-lab-chinese-title{
        font-size:12px;
        font-weight: bold;
        color:white;
        text-align: center;



    }
        
    @media (max-width: 768px) {
    .banner-container {
        width:100%;
    }

    .banner-slide {
        font-size: 2rem;
    }
    }

    @media (min-width: 1400px) {
        .banner-container{
            width:1200px;
            margin: 0 auto;
            


        }

    }

    @media (min-width: 1400px) {
    .square {
        width:1200px;
        margin: 0 auto;
        


    }

    }