div#header {
    background: url("/images/header/phone.png") calc(50% - 450px) 13%/274px 481px no-repeat fixed,
        url("/images/header/watch.png") calc(50% - 230px) 38%/180px 267px no-repeat fixed,
        url("/images/header/laptop.png") calc(50% + 500px) 15%/800px 450px no-repeat fixed,
        url("/images/header/background.png") center/cover repeat fixed;
    position: relative;
/*    opacity: 0.65;*/
    min-height: 600px;
    z-index: 1;
}

div#header div#logo {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    background: url("/images/header/logo_192.png");
    height: 192px;
    width: 192px;
    box-shadow: 0px 0px 5px 5px rgba(255, 255, 255, 0.7);
    float: left;
}