ReasonJun

Pseudo-Classes hover // Select while the mouse cursor is over the selector element .box { width: 100px; height: 100px; background-color: orange; transition: 1s; } .box:hover { width: 300px; background-color: royalblue; } active // Select while clicking the mouse on the selector element a:active { color: red; } focus // Select when the selector element is focused input:focus { background-color: o..