body {
        background-color: hsl(218, 28%, 13%);
        align-items: center;
        overflow-x: hidden;
    }
    
    .title-font {
        font-family: 'Raleway', sans-serif;
    }
    
    .text-font {
        font-family: 'Open Sans', sans-serif;
    }
    
    .title-size {
        font-size: 40px;
    }
    /* Navbar section */
    
    nav {
        display: flex;
        justify-content: space-around;
        align-items: center;
        min-height: 8vh;
        font-family: 'Raleway', sans-serif;
    }
    
    .nav-links {
        display: flex;
        justify-content: space-around;
        width: 50%;
    }
    
    .nav-links li {
        list-style: none;
    }
    
    .nav-links a {
        color: rgb(226, 226, 226);
        text-decoration: none;
        letter-spacing: 1px;
        font-size: 15px;
        font-weight: bold;
        transition: all 0.3s ease;
    }
    
    .burger {
        display: none;
        cursor: pointer;
    }
    
    .burger div {
        width: 25px;
        height: 3px;
        background-color: rgba(226, 226, 226);
        margin: 5px;
    }
    
    @media screen and (max-width:500px) {
        .nav-links {
            width: 50%;
        }
    }
    
    @media screen and (max-width:500px) {
        body {
            overflow-x: hidden;
        }
        .nav-links {
            position: absolute;
            right: 0px;
            height: 20vh;
            top: 8vh;
            display: flex;
            align-items: center;
            width: 100%;
            transform: translateX(100%);
            transition: transform 0.5s ease-in;
        }
        .nav-links li {
            opacity: 0;
        }
        .burger {
            display: block;
        }
    }
    
    .nav-active {
        transform: translateX(0%);
    }
    
    @keyframes navLinkFade {
        from {
            opacity: 0;
            transform: translateX(50px);
        }
        to {
            opacity: 1;
            transform: translateX(0px)
        }
    }
    
    .toggle .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .toggle .line2 {
        opacity: 0;
    }
    
    .toggle .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    /*top section*/
    
    .intro-im {
        width: 100%;
    }
    
    .text-line {
        line-height: 3rem;
    }
    
    h1 {
        padding: 5%;
    }
    
    #top .container h3 {
        font-size: 25px;
        line-height: 2.5rem;
        padding: 0 15% 3% 15%;
    }
    
    .btn-top {
        padding: 1% 5%;
        background: linear-gradient( 90deg, hsl(176, 68%, 64%), hsl(198, 60%, 50%));
        border-radius: 25px;
        color: hsl(0, 0%, 100%);
    }
    
    .text-color {
        color: hsl(0, 0%, 100%);
    }
    
    .container {
        align-items: center;
        text-align: center;
    }
    
    .title-weight {
        font-weight: 700;
    }
    /*features section*/
    
    .container {
        margin: 20px auto 80px auto;
    }
    
    .icon-feature {
        margin: 10px auto 30px auto;
    }
    
    .feature-col {
        padding: 3%;
    }
    /*middle section*/
    
    .middle-col {
        padding: 3% 0 5% 0;
    }
    
    @media screen and (max-width:789px) {
        .middle-col {
            padding: 3% 7% 5% 5%;
        }
    }
    
    .middle-col h3 {
        line-height: 2.5rem;
        font-size: 25px;
    }
    
    .middle-text {
        text-align: left;
        line-height: 1.5rem;
        padding: 5% 0;
        margin-right: 40px;
    }
    
    .link-middle {
        font-family: "Open Sans";
        font-weight: 400;
        line-height: 1.5;
        font-size: 1.5rem;
        text-decoration: underline;
        color: hsl(170, 45%, 43%);
    }
    
    .middle-title {
        margin-right: 50%;
    }
    
    .productive-im {
        margin-left: 60px;
        width: 100%;
    }
    
    @media screen and (max-width:789px) {
        .productive-im {
            margin-left: 0px;
        }
    }
    /* testimonials  */
    
    .text-padd {
        padding-bottom: 20px;
    }
    
    .testimonial-name {
        font-size: 15px;
    }
    
    .testimonial-card {
        background-color: hsl(219, 30%, 18%);
    }
    
    .testimonial-cont {
        padding: 5%;
    }
    
    @media screen and (max-width:789px) {
        .testimonial-card {
            margin-bottom: 10%;
        }
    }
    
    .testimonial-im {
        width: 60px;
        border-radius: 30px;
    }
    /*cta section*/
    
    .form-rounded {
        border-radius: 2rem;
        align-items: stretch;
    }
    
    .cta-card {
        background-color: hsl(217, 28%, 15%);
        padding: 5%;
    }
    
    #cta {
        margin: auto 15%;
    }
    
    .cta-cont {
        padding: 3% 10%;
        position: relative;
        top: 120px;
    }
    
    @media screen and (max-width:500px) {
        .cta-cont {
            position: relative;
            top: 60%;
            padding: 3%;
        }
    }
    
    .cta-text-padd {
        padding: 3% 0;
    }
    
    .btn-cta {
        padding: 4% 8%;
        height: 50px;
        background: linear-gradient( 90deg, hsl(176, 68%, 64%), hsl(198, 60%, 50%));
        border-radius: 25px;
        color: hsl(0, 0%, 100%);
    }
    
    @media screen and (max-width:789px) {
        .form {
            margin: 7% auto;
        }
    }
    /*validation email*/
    
    .hide {
        display: none;
    }
    
    .error {
        color: red;
        font-size: 0.8em;
        font-family: sans-serif;
        font-style: italic;
    }
    /*bottom section*/
    
    #bottom {
        padding-top: 50px;
    }
    
    @media screen and (max-width:789px) {
        #bottom {
            padding-top: 10%;
        }
        .footer-col-contact {
            position: relative;
            left: 30%;
        }
    }
    
    #bottom,
    #footer {
        background-color: hsl(216, 53%, 9%);
    }
    
    .fas-footer {
        color: white;
    }
    
    .bottom-cont {
        text-align: center;
        padding: 5%;
        margin: auto 2%;
    }
    
    .text-size {
        font-size: 14px;
    }
    
    .footer-col {
        padding: 2% 5%;
    }
    
    .footer-col-contact {
        padding: 3%;
    }
    
    .footer-contact-icon {
        padding: 5px 15px;
    }
    
    .contact-text {
        margin-top: 1.5%;
    }