.sec5 {
    background: linear-gradient(to right top, rgb(255, 187, 187), rgb(255, 102, 102));
    min-height: 100vh;
    background-size: 100%;
}
video {
    width: 80%;
    border-radius: 25px;
    position: relative;
    top: 3.25rem;
    left: 7.875rem;
}