body{
    position: relative;
    min-height: 100vh;
}
body::after {    
    /* background-image: url('../img/pattern_bg.png'); */
    background-size: cover;
    position: absolute;
    top: 0px;
    right: 0px;
    bottom: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    opacity: 0.15;
    z-index: -1;
}

section{
    margin: 200px 30% 0 0;
    /* margin-right: 200px; */
    width: 60%;
    font-size: 20px;
}

.section-title{
    text-align: center;
    margin-top: 200px;
    display: none;
}
.video-bg{
    position: absolute;
    height: 100vh;
    z-index: -1;
    display: inline-block;
}

.video-bg video{
    height: 100%;
    box-sizing: border-box;
    position: absolute;
    /* width: 100%; */
    /* object-fit: cover; */
}



.corner-img{
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50%;
    display: none;
    top: 100px;
    max-height: 200px;
    /* transform: scaleY(-1); */
}

#corner-right{
    transform: scale(-1, -1);
    right: -40px;
}

#corner-left{
    transform: scale(1, -1);
    left: -40px;
    

}

@media screen and (max-width:740px) {
    .section-title{
        display: block;
    }

    section{
        width: 90%;
    }
    
    .video-bg{
        display: none;
    }

    section{
        margin: 50px auto;
    }

    .corner-img{
        display: block;
    }

    html, body{
        overflow-x: hidden;
    }
}