.content{
background-image: url("../img/bg_substrat.png");
background-position: left top;
background-color: white;
}

#zavorka_l{
border-left: 1px solid #8f4926;
border-top: 1px solid #8f4926;
border-bottom: 1px solid #8f4926;
}

#zavorka_r{
border-right: 1px solid #8f4926;
border-top: 1px solid #8f4926;
border-bottom: 1px solid #8f4926;
}