* {
    font-family: 'Montserrat', sans-serif;
    margin: 0;
    padding: 0;
}

.center {
    margin: auto;
    width: 100%;
}

.blocks {
    padding: 20px 40px;
    background-color: rgb(255, 255, 255);
}

body,
html {
    width: 100%;
    height: 100%;
}

body {
    background-image: url("../images/body_background_1.jpg");
    background-color: #807384;
    background-repeat: no-repeat;
    background-size: cover;
}

nav {
    position: fixed;
    top: -45px;
    width: 100%;
    height: 45px;
    background-color: rgba(255, 255, 255, 0.911);
    transition: all 0.3s;
    z-index: 3;
}

nav li {
    display: inline-block;
    list-style: none;
}

nav a {
    display: flex;
    text-decoration: none;
    color: #634013;
    text-align: center;
    padding: 14px 16px;
    margin-right: 10px;
}

nav a:hover {
    color: rgb(165, 157, 84);
}

nav a:visited {
    color: #634013;
    text-decoration: none;
}

.layer {
    background-color: rgba(0, 0, 0, 0.4);
    height: 100%;
}

.first_block {
    padding-top: 250px;
}

h1 {
    text-align: center;
    font-weight: normal;
    color: white;
    font-size: 40px;
    padding-bottom: 40px;
    z-index: -3;
}

.first_block p {
    text-align: center;
    color: white;
    font-size: 20px;
    padding: 0 60px;
    z-index: -3;
}

.second_block h2 {
    margin-top: 50px;
    text-align: center;
    font-weight: normal;
}

.second_block p {
    margin-top: 17px;
    margin-bottom: 50px
}

.advantages_block {
    width: 60%;
    margin: auto;
    display: flex;
    justify-content: space-between;
}

.advantages {
    display: inline-block;
    width: 200px;
    height: 200px;
    background-color: #6d6b83;
    text-align: center;
    line-height: 200px;
    font-size: 25px;
}

#first_adv_block {
    background-image: url(../images/simple_img2.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    /* filter: blur(0.5px); */
    color: rgb(255, 255, 255);
}

#second_adv_block {
    background-image: url(../images/simple_img.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    /* filter: blur(0.7px); */
}

#third_adv_block {
    background-image: url(../images/portable_img2.jpg);
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    /* filter: blur(0.7px); */
    color: white;
}

.third_block {
    background-color: #ffffff;
}

.fourth_block_justify {
    display: flex;
    justify-content: space-between;
    background-color: rgb(255, 233, 198);
}

.fourth_block_text {
    display: inline-block;
    width: 50%;
    padding: 10px;
    text-align: center;
}

.fourth_block_img {
    display: inline-block;
    width: 45%;
    padding: 10px;
}

.fourth_block p {
    display: inline-block;
}

.fourth_block img {
    width: 100%;
    height: 100%;
}

footer {
    background-color: rgb(199, 191, 178);
}

footer .footer_block {
    display: flex;
    justify-content: space-around;
    width: 80%;
    margin: auto;
}

footer .icons {
    width: 110px;
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
}

footer img {
    width: 24px;
    height: 24px;
}

footer .tel_num {
    display: inline-block;
}

footer .tel_num a {
    color: black;
    font-size: 15px;
    text-decoration: none;
    display: inline-block;
    line-height: 40px;
}

footer .tel_num a:hover {
    color: grey;
}

iframe {
    height: calc(100vw/1.77);
}