AI solution for CSS coding question on BFE.dev
12. close button in CSS

To create a close button in CSS with lines for the cross, use the following code:

.close {  position: relative;  width: 30px; /* adjust width as needed */  height: 30px; /* adjust height as needed */  background-color: transparent;  border: none;  cursor: pointer;}.close:before,.close:after {  content: '';  position: absolute;  top: 50%;  left: 50%;  transform: translate(-50%, -50%);  width: 75%;  height: 2px;  background-color: #aaa;}.close:before {  transform: translate(-50%, -50%) rotate(45deg);}.close:after {  transform: translate(-50%, -50%) rotate(-45deg);}

In the HTML code, add the close class to the button element:

<button class="close"></button>

Adjust the width and height properties in the CSS code to change the size of the button as needed.