body { 
    background-color: #000000; 
    margin: 0;
    padding: 0;
}

/* Traka od ivice do ivice */
.gornja-traka {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 50px;
    background-color: #000000;
    border-bottom: 1px solid #ffffff;
    display: flex;
    align-items: center;
    justify-content: space-around;
    box-sizing: border-box;
    z-index: 9999;
}

/* Velika dugmad na traci */
.gornja-traka button {
    background: transparent;
    color: #ffffff;
    border: 1px solid #ffffff;
    height: 30px;
    padding: 0 20px;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    border-radius: 3px;
    transition: all 0.2s ease;
    box-shadow: 0 0 4px #ffffff, inset 0 0 4px #ffffff;
}

.gornja-traka button:hover {
    background-color: #ffffff;
    color: #000000;
    box-shadow: 0 0 10px #ffffff;
}

/* KONTEJNER (30% x 30%, 100px top, 0 left) */
.strim-kontejner {
    position: absolute;
    top: 100px;
    left: 0;
    width: 30%;
    height: 30%;
    overflow: hidden; /* Po startu je zaključano */
    border: 1px dashed #ffffff;
    background-color: #111111;
}

/* Veliki iframe u pozadini koji omogućava šetanje kroz ceo sajt */
.strim-kontejner iframe {
    width: 1920px;   
    height: 2000px;  
    border: none;
    background: transparent;
}

/* MINIJATURNO DUGME (10px x 10px) U SAMOM UGLU KONTEJNERA */
#btnLock {
    position: absolute;
    top: 0;
    left: 0;
    width: 10px;
    height: 10px;
    padding: 0;
    margin: 0;
    border: 1px solid #ffffff;
    background-color: transparent;
    cursor: pointer;
    z-index: 99999; /* Mora biti iznad iframe-a da može da se klikne */
    box-shadow: 0 0 3px #ffffff;
    border-radius: 0;
}