body {
    margin: 0;
    font-family: 'Times New Roman', sans-serif, italic;
}

a {
    color: #fff;
    text-decoration: none;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 20px;
/*    background-color: rgba(0, 0, 0, 0.7);*/
    color: #fff;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 10;
}

.header_logo img {
	align-items: center;
    max-width: 210px;
}

.red_button {
	
    display: inline-block;
    background-image: url('red_buttom.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    width: 200px;
    height: 100px;
    color: white;
    text-align: center;
    line-height: 100px;
    border: none;
    cursor: pointer;
    transition: transform 0.1s;	
}

.red_button:hover {
    transform: scale(0.97);
}


.nav {
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    padding: 10px;
    align-items: center;
}

.nav_list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
	padding-right: 50px;
    justify-content: center;
    flex: 1;
}

.nav_item {
    margin-top: 10px;
    margin-bottom: 10px;
    margin-left: 3px;
    margin-right: 2px;
}

.nav_item a {
    color: #fff;
    text-decoration: none;
    font-size: 1rem;
    padding: 10px;
}

.nav_item a:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 5px;
}

.burger_menu {
    display: none;
    flex-direction: column;
    cursor: pointer;
    top: 20px;
    padding-right: 65px;
    z-index: 11;
}

.burger_menu span {
    width: 45px;
    height: 7px;
    background-color: #6699cc;
    margin: 5px 0;
}

.lenta {
    padding-top: 8.5vw;
    padding-bottom: 1vw;
}

.lenta_block {
    width: 80vw;
    margin: 0 auto;
    color: #333333;
}

.lenta_box_black {
    width: 100%;
    padding: 2vw 0;
    background-color: #333333;
    color: #ffffff;
}

.text_container {
    width: 80%;
    margin: 0 auto;
    text-align: center;
    padding: 2vw 0;
}

.divider {
    width: 72%;
    margin: 0 auto 2vw;
    height: 0.5vw;
    background-color: #6699CC;
}

.section_title {
    font-size: 1.8rem;
    color: #6699cc;
    text-decoration: underline;
}

.section_text {
    font-size: 1.5rem;
    line-height: 1.5;
    text-align: justify;
}

.image_container {
    margin: 4vw auto;
    width: 45vw;
}

.responsive_image {
    width: 100%;
    height: auto;
}

@media (max-width: 1170px) {
    .section_text {
        font-size: 1rem;
    }
    .section_title {
        font-size: 1.3rem;
    }
    .nav{
        background-color: rgba(0, 0, 0, 0.0);
    }

    .nav_list {
        flex-direction: column;
        display: none;
        width: 100%;
        background-color: rgba(0, 0, 0, 0.9);
        position: absolute;
        top: 85px;
        left: 0;
        z-index: 9;
    }

    .red_button {
        width: 200px;
        height: 75px;
        line-height: 75px;
    }

    .header_logo img {
        max-width: 140px;
    }

    .nav_list.active {
        display: flex;
    }

    .nav_item {
        margin: 2vw 0;
    }

    .burger_menu {
        display: flex;
    }
}

@media (max-width: 480px) {
    .nav_item a {
        font-size: 3vw;
    }

    .header {
        padding: 2vw 5vw;
    }

    .lenta {
        padding-top: 20vw;
    }

    .section_title {
        font-size: 1.1rem;
    }

    .section_text {
        font-size: 0.9rem;
    }

    .image_container {
        width: 90%;
        margin: 0 auto;
    }

    .text_container {
        padding: 5vw 0;
    }
    .header_logo img {
        align-items: center;
        max-width: 70px;
    }
    .red_button {
    width: 120px;
    height: 60px; 
    font-size: 0.6rem;
    }
}