.embed-responsive {
    position: relative;
    display: block;
    height: 0;
    padding: 0;
    padding-bottom: 0px;
    overflow: hidden;
}


.embed-responsive-16by9 {
    padding-bottom: 56.25%;
}

#video-wrapper, .video-wrapper {
    background-size: cover;
    box-shadow: 0px 10px 15px 0px rgba(255, 255, 255, 0.2);
    width: 100%;
}

#getting-started {
    z-index: 100;
    position: absolute;
    width: 100%;
    height: 100%;
    color: white;
    font-size: 3em;
    /*background-color: red;*/
    display: grid;
    align-content:center;
}

#getting-started p{
    background-color:#40404088;
    text-align:center;
    padding:20px;
}


#technicka-poznamka {
    z-index: 100;
    position: absolute;
    width: 100%;
    color: white;
    font-size: 1em;
    bottom: 0;
    line-height: 22px;
    background-color: rgba(0, 0, 0, 0.75);
    padding: 0.4em 0;
    display: none;
}

#error-wrapper{
    text-align:center;
    font-size:130%;
}

    #error-wrapper p {
        margin: 0px auto;
        padding:8px;
        background-color: rgba(0, 0, 0, 0.75);
    }