html, body {height: 100%;}
html {
    background: url(images/background-davice.jpg) no-repeat center center fixed; 
  -webkit-background-size: cover;
  -moz-background-size: cover;
  -o-background-size: cover;
  background-size: cover;
}
body {
    /*background-image: url(images/background-davice.jpg);
    background-color: #000000;
    background-repeat: no-repeat;
    background-position: center;
    background-size: contain;*/
}

.langs {
    position: absolute;
    right: 10px;
    top: 10px;
}
.langs a {
    color: #2D2D2D;
}

.logo_wrap {
    width: 100%;
    padding-top: 5%;
    margin-bottom: 50px;
}
.logo_img {
    width: 260px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.buttons_wrap {
    width: 100%;
    display: flex;
    display: -webkit-flex;
    justify-content: center;
    justify-content: -webkit-center;
    flex-wrap: wrap;
    flex-wrap: -webkit-wrap;
}

.round_btn {
    border-radius: 100%;
    /*width: 100px;*/
}

.round_btn img {
    width: 280px;
    border-radius: 100%;
    transition: 0.7s;
    margin-left: 50px;
    margin-right: 50px;
    margin-bottom: 50px;
    display: block;
}

.text_wrap {
    color: #2D2D2D;
    font-family: "Avenir";
    font-weight: 100;
    letter-spacing: 2px;
    line-height: 28px;
    text-align: center;
    margin-bottom: 50px;
}

.body_txt {
    width: 80%;
    margin-left: auto;
    margin-right: auto;
}
.body_txt_fixed {
    width: 90%;
    margin-left: auto;
    margin-right: auto;
    text-align: justify;
}
.signature {
    width: 90%;
    margin-left: auto;
    margin-right: auto;
}
.signature img {
    width: 200px;
    margin-bottom: 25px;
    margin-top: 25px;
    display: block;
    margin-right: auto;
}
.cta {
    margin-top: 25px;
}
.ctabtn {
    text-decoration: none;
    color: #2D2D2D;
    border: 1px solid #2D2D2D;
    padding: 12px 35px 12px 35px;
    transition: 0.5s;
}
.ctabtn:hover{
    background-color: #f9f9f9;
    
}

footer {
    position: absolute;
    right: 0;
    bottom: 30px;
    left: 0;
    text-align: center;
    font-size: 0.7em;
    font-family: "Avenir";
    font-weight: lighter;
    color: #2D2D2D;
    letter-spacing: 2px;
    line-height: 28px;
    padding-left: 5%;
    padding-right: 5%;
}
.footer

@media only screen and (min-width: 700px) {
    .buttons_wrap {
        margin-top: 50px;    
    }
    .body_txt_fixed {
        width: 50%;
    }
    .signature {
        width: 50%;
    }
    
}

@media only screen and (min-width: 1080px) {
    .body_txt_fixed {
        width: 32%;
        font-size: 0.8em;
    }
    .signature {
        width: 32%;
    }
    
    footer {
        /*position: absolute;
        right: 0;
        bottom: 30px;
        left: 0;*/
    }
}