header {
    width: 100%;                 /* Ensures the header is full-width */
    background-color: #333;      /* Background color of the header */
    color: #fff;                 /* Text color */
    padding: 20px 0;             /* Padding above and below the content */
    box-shadow: 0 2px 5px rgba(0,0,0,0.2); /* Adds a shadow for better visibility */
}

.header-content {
    width: 90%;                  /* Controls the content width within the header */
    margin: 0 auto;              /* Centers the content horizontally */
    display: flex;               /* Enables Flexbox layout */
    flex-direction: column;      /* Stacks items vertically */
    align-items: center;         /* Centers items horizontally */
    justify-content: center;     /* Centers items vertically */
}

@media (min-width: 768px) {     /* Media query for tablets and desktops */
    .header-content {
        flex-direction: row;    /* Changes layout to horizontal on larger screens */
        justify-content: space-between; /* Distributes space between items */
    }
}