.header
{
    margin: 0;
    padding: 0;

}

.headerTop
{
    text-align: center;
    font-size: 20px;
    font-weight: bold;
    background: linear-gradient(0.25turn, #789ac7, #f6f8fb, #B0C4DE);
    opacity: 80%;
    width: 100%;
    position: fixed;
    z-index: 3;
}

.headerLogo
{
    float: left;
    padding: 0 50px;
    height: 64px;
}


.headerReferences
{
    float: right;
    margin-left: auto;
    margin-right: auto;
    overflow: hidden;
    display: flex;
    justify-content: space-around;

}

@media only screen and (max-width: 1150px)
{
    .headerReferences
    {
        float: left;
        clear: both;
    }
}

.headerReferences div
{
    padding: 50px;
    padding-top: 20px;
    padding-bottom: 20px;
    float: left;
    transition: 0.2s ease-in-out;
}



.headerReferences div:hover
{
    cursor: pointer;
    background: #789ac7;
    color: black;
}

.headerReferences a
{
    text-decoration: none;
    color: black;
    opacity: 1;
}

.headerMiddle
{
    height: 64px;
    background-color: #B0C4DE;
}

@media only screen and (max-width: 1150px)
{
    .headerMiddle
    {
        height: 128px;
    }
}

.headerBottom
{
    position: relative;
    width: 100%;
    clear: both;
    animation: changeBg 10s infinite;
    background-repeat: no-repeat;
    background-position: center;
    background-attachment: fixed;
    background-size: cover;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    height: 1000px;
}

#strzalka
{
    position: absolute;
    bottom: 15%;
    width: 50px;
    left: calc(50% - 25px);
    filter: invert(100%);
    transition: 0.3s;
}

#strzalka:hover
{
    transform: translateY(-30px);

}

@keyframes changeBg
{
    0%, 100%
    {
        background-image: url("../images/szklo-rama-slider.jpg");
    }
    33%
    {
        background-image: url("../images/szklo-rama-slider2.jpg");
    }
    67%
    {
        background-image: url("../images/stockvault-point-break100692-1240x465.jpg");
    }
}