Single Price Grid Component using CSS Flexbox

Replace <div class="container"> with the main tag <main>,<h3> with <h1> and <h4> with <h2> to fix the accessibility issues . The <h4> within <ul> should be out of the ul and on top of the ul to fix the error issue. click here for more on web-accessibility and semantic html

To center .container on the page, add min-height:100vh; display: flex; align-items: center: justify-content: center; or min-height:100vh; display: grid place-items: center to the body.

To center .container on the page using flexbox:
body{
min-height: 100vh;
display: flex;
align-items: center;
justify-content: center;
}

To center .container on the page using grid:
body{
min-height: 100vh;
display: grid;
place-items: center;
}

The body has a wrong background-color. Use the colors that were given in the styleguide.md found in the zip folder you downloaded.

Give .top-container, left-container and right container the same padding value fir all the sides and remove the height value from .container

Use relative units like rem or em as unit for the padding, margin, width values and preferably rem for the font-size values, instead of using px which is an absolute unit. For more on CSS units Click here

Hope am helpful.

Well done for completing this challenge. HAPPY CODING