Clone of the Ryanair homepage using HTML and CSS

/* Reset some default browser styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Set the basic font and line height for the body */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
}

/* Container class to center the content and set a width */
.container {
    width: 80%;
    margin: auto;
    overflow: hidden;
}

/* Header styling */
header {
    background: #1A73E8; /* Ryanair blue background */
    color: #fff; /* White text color */
    padding-top: 30px; /* Padding at the top */
    min-height: 70px; /* Minimum height */
    border-bottom: #1558b0 3px solid; /* Bottom border */
}

/* Header title styling */
header h1 {
    float: left; /* Float to the left */
    margin-top: 0; /* No margin at the top */
}

/* Navigation styling */
header nav {
    float: right; /* Float to the right */
    margin-top: 10px; /* Margin at the top */
}

/* Unordered list in the navigation */
header nav ul {
    list-style: none; /* Remove list style */
}

/* List items in the navigation */
header nav ul li {
    display: inline; /* Display inline */
    margin-left: 20px; /* Margin on the left */
}

/* Links in the navigation */
header nav ul li a {
    color: #fff; /* White color */
    text-decoration: none; /* Remove underline */
    font-weight: bold; /* Bold text */
}

/* Hero section styling */
.hero {
    padding: 50px 0; /* Padding top and bottom */
    background: url('https://source.unsplash.com/1600x900/?travel') no-repeat center center/cover; /* Background image */
    color: #fff; /* White text color */
    text-align: center; /* Center text */
}

/* Hero section title */
.hero h2 {
    margin-bottom: 20px; /* Margin at the bottom */
}

/* Hero form styling */
.hero form {
    display: flex; /* Flexbox layout */
    justify-content: center; /* Center items horizontally */
    align-items: center; /* Center items vertically */
}

/* Text inputs in the hero form */
.hero form input[type="text"],
.hero form input[type="date"] {
    padding: 10px; /* Padding */
    margin-right: 10px; /* Margin on the right */
    border: 1px solid #ccc; /* Gray border */
    border-radius: 5px; /* Rounded corners */
}

/* Hero form button */
.hero form button {
    padding: 10px 20px; /* Padding */
    border: none; /* No border */
    background: #1A73E8; /* Ryanair blue background */
    color: #fff; /* White text color */
    cursor: pointer; /* Pointer cursor on hover */
    border-radius: 5px; /* Rounded corners */
}

/* Featured section styling */
.featured {
    padding: 30px 0; /* Padding top and bottom */
    background: #fff; /* White background */
}

/* Featured section title */
.featured h2 {
    text-align: center; /* Center text */
    margin-bottom: 20px; /* Margin at the bottom */
}

/* Flights container */
.flights {
    display: flex; /* Flexbox layout */
    justify-content: space-around; /* Space around items */
}

/* Individual flight styling */
.flight {
    text-align: center; /* Center text */
}

/* Flight image styling */
.flight img {
    width: 100%; /* Full width */
    border-radius: 10px; /* Rounded corners */
}

/* Footer styling */
footer {
    padding: 20px 0; /* Padding top and bottom */
    background: #1A73E8; /* Ryanair blue background */
    color: #fff; /* White text color */
    text-align: center; /* Center text */
}

/* Responsive design for mobile devices */
@media (max-width: 768px) {
    .container {
        width: 90%; /* Increase width on smaller screens */
    }
    
    header nav ul li {
        display: block; /* Stack items vertically */
        margin-left: 0; /* Remove left margin */
        margin-bottom: 10px; /* Add bottom margin */
    }

    .hero form {
        flex-direction: column; /* Stack form elements vertically */
    }

    .hero form input[type="text"],
    .hero form input[type="date"],
    .hero form button {
        margin-right: 0; /* Remove right margin */
        margin-bottom: 10px; /* Add bottom margin */
    }

    .flights {
        flex-direction: column; /* Stack flights vertically */
    }

    .flight {
        margin-bottom: 20px; /* Add bottom margin */
    }
}