*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: black;
}

.contain{
    display: flex;
    justify-content: center;
    align-items: center;
    height: 800px;

}

.contain video{
    width: 100%;
    min-height: 100vh;
    object-fit:contain;


}

.contain .text_box{
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: rgba(0,0,0,0.5);
    color: white;
    font-size: 18px;
    opacity: 0;
    animation: fadeIn 3s forwards;
}