* {
    box-sizing: border-box;
}

body {
    margin: 0px;
    font-family: Arial;
    font-size: 17px;
    color:white;
    background:#222;
}


.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* Poměr stran 16:9 (pro 4:3 použij 75%) */
    height: 0;
    overflow: hidden;
    margin: 20px 0;
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.container{
    max-width: 100%;
    position: relative;
    overflow: hidden;
    margin: 0 auto;
}

.container-svetla {
    width: 100%;
    text-align: center;
    padding-top: 20px;
}


.velikost {
    max-width: 120px;
    margin-right: 15px;
}
.blok{
    margin: 10px 0 50px 0;
}

.vlajka {  height:50px; margin: 10px; padding:10px; background: rgba(193, 190, 190, 0.27);}
.vlajka:hover { background: rgba(232, 203, 13, 0.51);}