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there is no need to give the body a width and height value, remove them.

There is no need to give the main a height value and a box-shadow value.

there is no need for a padding-top value for .content-sec. give .content sec a reduced padding value for all the sides. .content-sec{ padding: 2em; text-align: center;}

There is no need for a height value in . plan-section rather increase the padding value to 1em and replace the min-width with width.

the box-shadow of the button has a wrong color. the color of the box-shadow is hsla(245, 75%, 52%, 0.5);

Hope am helpful.

Well done for completing this challenge. HAPPY CODING