.about{
    background: url("../img/about-bg.jpg") no-repeat;
    -webkit-background-size: cover;
    background-size: cover;
}

.about-inn{
    max-width: 1200px;
    padding: 130px 25px;
    margin: 0 auto;
}

.about-txt{
    background: rgba(255,255,255,.8);
    width: 490px;
    padding: 50px 40px 60px 60px;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
.about-txt__ttl{
    font: bold 45px/1.1 roboto-bold;
    color: #353535;
    padding-bottom: 30px;
}
.about-txt__txt{
    font-size: 17px;
    line-height: 39px;
    color: #353535;
}

@media screen and (max-width: 1023px){
    .about-txt{
        width: auto;
    }
}

@media screen and (max-width: 479px){
    .about-inn{
        padding: 50px 15px;
    }
    .about-txt{
        padding: 25px 20px;
    }
    .about-txt__ttl{
        font-size: 35px;
        text-align: center;
        padding-bottom: 20px;
    }
    .about-txt__txt{
        line-height: 31px;
    }
}