:root {
    --color-white: #ffffff;
    --color-grey: #adadad;
}

@media only screen and (max-width: 1440px) {
    .main-content {
        height: 100vh;
        width: 75vw;
    }

    .features-card img {
        max-width: 40px;
        width: 100%;
        max-height: 40px;
        height: 100%;
    }

}

@media only screen and (max-width: 1200px) {
    .main-content {
        width: 80vw;
    }
}

@media only screen and (max-width: 992px) {
    .main-content {
        width: 100vw;
    }

    h1 {
        font-size: 48px;
        line-height: 72px;
    }

    .main-title {
        margin-bottom: 24px;
    }

    .subscribe-form {
        width: 75%;
        margin: 32px auto auto;
    }


    .features-card-main {
        margin-bottom: 24px;
    }

    .features-card img {
        padding-right: 16px;
    }

    .footer {
        margin-top: 48px;
        border-top: 1px solid #4D4D4D;
        box-shadow: 0px 2px 48px 0px rgba(0, 0, 0, 0.06);
    }

    .copyright {
        text-align: right;
    }
}

@media only screen and (max-width: 768px) {
    h1 {
        font-size: 40px;
        line-height: 50px;
    }

    h2 {
        font-size: 18px;
        line-height: 28px;
    }

    h3 {
        font-size: 18px;
        line-height: 28px;
    }

    p {
        font-size: 14px;
        line-height: 22px;
    }

    .features-card {
        padding: 16px;
    }
}

@media only screen and (max-width: 576px) {
    h1 {
        font-size: 32px;
        line-height: 40px;
    }

    h2 {
        font-size: 16px;
        line-height: 24px;
    }

    h3 {
        font-size: 16px;
        line-height: 24px;
    }

    p {
        font-size: 14px;
        line-height: 18px;
    }

    .features-card {
        padding: 16px;
        justify-content: flex-start;
    }

    .home-btn {
        font-size: 14px;
        padding: 14px 28px;
        display: inline-block;
        margin-top: 24px;
    }

    .input-email {
        padding: 8px;
        font-size: 12px;
    }

    input[type=email]::placeholder {
        font-size: 12px;
    }

    .submit-btn {
        display: flex;
        align-items: center;
        height: 75%;
        padding: 0px 8px;
        right: 4px;
        font-size: 12px;
    }

    .copyright {
        margin: 32px auto;
        text-align: left;
    }

    .footer {
        padding: 16px 16px;
    }
}

@media only screen and (max-width: 420px) {
    h1 {
        font-size: 24px;
        line-height: 30px;
    }

    h2 {
        font-size: 14px;
        line-height: 18px;
    }

    h3 {
        font-size: 14px;
        line-height: 18px;
    }

    p {
        font-size: 14px;
        line-height: 18px;
    }

    .home-btn {
        font-size: 12px;
        padding: 12px 24px;
        display: inline-block;
        margin-top: 16px;
    }

    .input-email {
        padding: 8px;
        font-size: 12px;
    }

    input[type=email]::placeholder {
        font-size: 12px;
    }

    .submit-btn {
        display: flex;
        align-items: center;
        height: 75%;
        padding: 0px 8px;
        right: 4px;
        font-size: 12px;
    }

    .features-card {
        padding: 16px;
        justify-content: flex-start;
    }
}