body {
    margin: 0;
    background-image: url('img/background_3.jpg'); 
    background-size: cover; 
    background-position: center; 
    background-repeat: no-repeat;
    font-family: 'Roboto', sans-serif;
    color: white;
    font-size: 22px;
    position: relative; 
}

body::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('img/background_1.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 1;
    animation: fadeBackground 10s infinite ease-in-out;
    z-index: -1; 
}


@media (max-width: 768px) {
    
    body::after {
        animation: none; 
    }

    html, body {
        overflow-y: hidden;
    }

}


@keyframes fadeBackground {
    0% {
        -webkit-opacity: 1;
        opacity: 1;
    }
    50% {
        -webkit-opacity: 0.2;
        opacity: 0.2;
    }
    100% {
        -webkit-opacity: 1;
        opacity: 1;
    }
}


html, body {
    height: 100%; 
    margin: 0; 
}

.content {
    display: flex;
    justify-content: center; 
    align-items: center;   
    height: 100%; 
}

#burger-menu {
    cursor: pointer;
    height: 27px;
    width: 27px;
    margin: 50px;
    right: 0px;
    overflow: visible;
    position: absolute;

    z-index: 10;
}

#burger-menu span,
#burger-menu span:before,
#burger-menu span:after {
    background: #fff;
    display: block;
    height: 2px;
    opacity: 1;
    position: absolute;
    transition: 0.3s ease-in-out;
}

#burger-menu span:before,
#burger-menu span:after {
    content: '';
}

#burger-menu span:before {
    left: 0px;
    top: -10px;
    width: 27px;
}

#burger-menu span {
    right: 0px;
    top: 13px;
    width: 27px;
}

#burger-menu span:after {
    left: 0px;
    top: 10px;
    width: 27px;
}

/* 'close' class for the burger menu */
#burger-menu.close span:before {
    top: 0px;
    transform: rotate(90deg);
    width: 27px;
}

#burger-menu.close span {
    transform: rotate(-45deg);
    top: 13px;
    width: 27px;
}

#burger-menu.close span:after {
    top: 0px;
    left: 0;
    transform: rotate(90deg);
    opacity: 0;
    width: 0;
}

#menu {
    z-index: 1;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    visibility: hidden;
    opacity: 0;
    background: #2c2d35;
    transition: all 0.3s ease-in-out;
    padding-top: 100px; 
    text-align: center;
    
}

#menu.overlay {
    visibility: visible;
    opacity: 1;
}

#menu ul {
    padding: 0;
}

#menu li {
    list-style: none;
}

#menu a {
    color: #fff;
    display: block;
    font-size: 32px;
    margin-bottom: 30px;
    text-decoration: none;
}

#menu li {
    margin-bottom: 5px;
}

#menu ul {
    padding-top: 25px;
    padding-bottom: 25px;
}

#menu p {
    padding-left: 15px;
    padding-top: 15px;
}