html,
body,
.wrapper {
    background-color: rgba(0, 0, 0, 0.3);
    height: 100vh;
}


/* header */
#header {

    margin: 0;
    background-position: 50% 50%;
    -webkit-background-size: cover;
    background-size: cover;
    height: 100vh;
    background-attachment: fixed;
    color: #fff;
    font-weight: bold;
}

.title {
    margin-top: 0%;
    font-size: 25px;
}

.header_center {
    margin-top: 3%;
    height: 280px;
    width: 380px;
}

.header_down {
    margin-top: 4%;
    font-size: 20px;
}

.sub_title {
    font-size: 30px;
    color: #84b3f6;
}

.email,
.telephone {
    font-size: 20px;
    margin-top: 10px;
}

.logotype {
    width: 300px;
    height: 70px;
}

@media (max-width: 720px) {
    .title {
        font-size: 17px;
        margin-top: 15%;
    }

    .header_down,
    .email,
    .telephone {
        font-size: 15px;
        text-align: center;
    }

    .sub_title {
        font-size: 20px;
    }

    .header_center {
        margin-top: 3%;
        height: 190px;
        width: 280px;
    }

    .logotype {
        width: 200px;
        height: 40px;
    }
}

.body_slides {
    list-style: none;
    margin: 0;
    padding: 0;
    z-index: -2;
    background: url(../img/1.jpg);
    background-position: 50% 50%;
    -webkit-background-size: cover;
    background-size: cover;
}

.body_slides,
.body_slides:after {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0px;
    left: 0px;
}

.body_slides:after {
    content: '';
    background: transparent repeat top left;
}


.body_slides li {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    background-size: cover;
    background-repeat: none;
    opacity: 0;
    -webkit-animation: anim_slides 18s linear infinite 0s;
    -moz-animation: anim_slides 18s linear infinite 0s;
    -o-animation: anim_slides 18s linear infinite 0s;
    -ms-animation: anim_slides 18s linear infinite 0s;
    animation: anim_slides 18s linear infinite 0s;
}

.body_slides li:nth-child(1) {
    background-image: url(../img/2.jpg);
}

.body_slides li:nth-child(2) {
    -webkit-animation-delay: 6.0s;
    -moz-animation-delay: 6.0s;
    background-image: url(../img/3.jpg);
}

.body_slides li:nth-child(3) {
    -webkit-animation-delay: 12.0s;
    -moz-animation-delay: 12.0s;
    background-image: url(../img/4.jpg);
}

.body_slides li:nth-child(4) {
    -webkit-animation-delay: 18.0s;
    -moz-animation-delay: 18.0s;
    background-image: url(../img/5.jpg);
}

.body_slides li:nth-child(5) {
    -webkit-animation-delay: 24.0s;
    -moz-animation-delay: 24.0s;
    background-image: url(../img/6.jpg);
}

.body_slides li:nth-child(6) {
    -webkit-animation-delay: 24.0s;
    -moz-animation-delay: 24.0s;
    background-image: url(../img/7.jpg);
}

@-webkit-keyframes anim_slides {
    0% {
        opacity: 0;
    }

    6% {
        opacity: 1;
    }

    24% {
        opacity: 1;
    }

    30% {
        opacity: 0;
    }

    100% {
        opacity: 0;
    }
}

@-moz-keyframes anim_slides {
    0% {
        opacity: 0;
    }

    6% {
        opacity: 1;
    }

    24% {
        opacity: 1;
    }

    30% {
        opacity: 0;
    }

    100% {
        opacity: 0;
    }
}