* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    color: #333;
}

.container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 40px 0 20px 0;
    max-width: 1180px;
    margin: 0 auto;
}

header .logo img {
    width: 50px;
}

.container nav ul {
    list-style: none;
    display: flex;
}

.container nav ul li {
    margin-left: 20px;
    opacity: 50%;
}

.container nav ul li a {
    text-decoration: none;
    color: #333;
    font-size: 0.9em;
}

.hero {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 20px;
    max-width: 1440px;
    margin: 0 auto;
}

.hero .content {
    max-width: 500px;
}

.hero .content nav{
    opacity: 50%;
    margin: 0 0 20px 0;
}

.hero .content nav ul{
    list-style: none;
    display: flex;
    font-size: 0.8em;
}

.hero .content nav ul a{
    margin: 10px;
    color: #333;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 5px 10px;
    border-radius: 21px;
    border: 1px;
    text-decoration: none;
    font-size: 0.8em;
}

.hero h1 {
    font-size: 4em;
    margin-bottom: 20px;
}

.hero h3 {
    font-size: 1.5em;
    margin-bottom: 30px;
    opacity: 50%;
    font-weight: normal;
}

.hero p {
    font-size: 0.8em;
    margin-bottom: 30px;
    opacity: calc(50%);
}

.hero form {
    display: flex;
    margin-bottom: 10px;
}

.hero .content ul.error-list{
    list-style: none;
    display: flex;
    font-size: 0.8em;
    margin: 10px 0;
    color: red;
}

.hero .content .alert-success{
    color: #0a0a0a;
    font-weight: bold;
    margin: 10px 0;
}

.hero form input {
    /*padding: 10px;*/
    font-size: 1em;
    border: none;
    border-bottom: 1px solid #BFBFBF;
    flex: 1;
    outline: none;
}

.hero form input:focus {
    border-bottom: 1px solid #BFBFBF;
    outline: none;
}

.hero form input::placeholder {
    opacity: 0.5;
}

.hero form button {
    padding: 10px 20px;
    font-size: 1em;
    background-color: #333;
    color: #fff;
    cursor: pointer;
    border-radius: 21px;
    border: 1px;
}

.app-preview img {
    width: 426px;
}

footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0 20px 0;
    max-width: 1180px;
    margin: 0 auto;
}

footer .footer-content {
    margin-bottom: 10px;
}

footer .footer-content a {
    margin-right: 20px;
    color: #333;
    text-decoration: none;
    font-size: 0.9em;
    opacity: calc(50%);
}

footer p {
    font-size: 0.8em;
    color: #888;
}

@media (max-width: 768px) {
    .container {
        padding: 20px;
    }

    .hero {
        flex-direction: column;
        text-align: center;
    }

    .app-preview {
        margin-top: 20px;
    }

    .app-preview img {
        width: 100%;
        margin-left: 25px;
    }

    .hero h1 {
        font-size: 2em;
        margin-bottom: 20px;
        text-align: left;
    }

    .hero h3 {
        text-align: left;
    }

    .hero form {
        flex-direction: column;
        width: 100%;
    }

    .hero form input {
        width: 100%;
        margin-bottom: 10px;
    }

    .hero form button {
        width: 100%;
    }

    footer {
        margin: 0 20px;
    }

}