@media (min-width:426px) {

    /**** HEADER ****/
    .top-header__title span {
        font-size: 1.2em;
    }

    .top-header__title p {
        font-size: .9em;
        padding-top: .25em;
    }

    .nav-menu {
        width: 40%;
    }

    .burger {
        width: 20px;
        height: 3px;
        background-color: #fff;
        margin: 2px 0;
    }

    .header-intro {
        padding: 20px;
        text-align: center;
    }

    .header-intro h1 {
        font-size: 3.5em;
        padding-bottom: 2.6rem;
    }

    .header-intro p {
        margin: 0 auto;
        font-size: 1.65em;
        line-height: 1.5em;
        width: 76%;
    }

    .button-start {
        font-size: 1em;
        padding: 10px 20px;
        border-radius: 5px;
    }

    
    /**** ABOUT ****/
    .about-main__container {
        padding: 65px 0;
    }

    .about-container {
        width: 85%;
    }

    .about-title h2 {
        font-size: 1.7em;
        font-weight: bold;
        letter-spacing: .04em;
    }
    .about-title,
    .about-content {
       margin: 0 50px;
       padding: 30px 0;
    }

    .about-main__container p,
    .client-item__sub,
    .client-item__content {
        font-size: 1em;
        line-height: 1.4em;
    }

    /**** PRODUCTS ****/
    .product-container {
        margin: 0 50px;
    }

    /**** LAST ****/
    .last-content {
        font-size: 1.1em;
    }

}

@media (min-width:640px) {
    .form-media {
        display: flex;
        width: 100%;
        margin: 0 auto;
    }

    .email {
        padding-left: 20px;
    }

    .name,
    .email {
        width: 100%;
    }

}

@media (min-width:769px) {
    
    /**** HEADER ****/
    .nav-menu li {
        font-size: 1.3em;
    }

    .header-intro p {
        width: 69%;
    }

    /**** PRODUCTS ****/

    .product-main__container {
        background-size: 150%;
        background-position-x: 45%; 
        background-position-y: 6%;
        text-align: center;
    } 

    .product-container {
        display: flex;
        width: 100%;
        padding: 30px 0;
        margin-left: 0;
    }

    .product-info { 
        margin: 0;
        width: 33.3%;
    }

    .product-info:nth-child(2) {
        border: none;
        border-right: 1px solid #fff;
        border-left: 1px solid #fff;
    } 

    /**** CLIENTS ****/
    .client-main__container {
        display: flex;
    }

    .client-item {
        width: 45%;
        margin-top: 0;
    }

    .client-item__title {
        font-size: 1.7em;
        font-weight: bold;
        letter-spacing: .04em;
    }

    .client-item__title {
        height: 100px;
        padding-bottom: 0;
    }

    .client-item__sub {
        height: 70px;
        padding-bottom: 0;
    }

    /**** LAST ****/
    .last-title {
        font-size: 1.8em;
        font-weight: 300;
    }

    .last-content {
        font-size: 1.3em;
    }


}