html, body {
    min-height: 100%;
}
body {
    background-image: url("img/City_Landscape_Background.jpg");
    background-repeat: no-repeat;
    background-position: 0 0;
    background-size: cover;   
    font-family: Verdana, Arial, Helvetica, sans-serif; 
    color: white;
}
    
.logo-center img {  
    display: block;
    margin-left: auto;
    margin-right: auto;
    height: 45vh;
}

.gateway-button {
    background-color: Transparent;
    background-repeat:no-repeat;
    border: 5px solid white;
    border-radius: 20px;
    padding: 0 !important;
    cursor:pointer;
    text-align: center;
    margin: 1em 0;    
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px); /*same, but for safari*/
}

.fill-div {
    display: block;
    height: 100%;
    width: 100%;
    text-decoration: none;
    padding: 1.5em 0.5em;
}

.fill-div:hover {
    text-decoration: none;
    background: rgba(0, 0, 0, 0.2);
}

.buttonTitle {
    font-size: 3.5em;
    color: white;
}

.buttonSubtitle {
    font-size: 1.65em;
    color: white;
}

.headerinfos {
    color:white;
    margin-top: 1em;
}

.headerinfos p{
    /*background: rgba(0, 0, 0, 0.2);  */
    text-align:center;
    margin: 0;     
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px); /*same, but for safari*/
}


@media (max-width: 768px) {
    .logo-center img {  
        height: 55vw;
    }

    body {
        background-image: url("img/City_Landscape_Background_mobile.jpg");
    }
}