CSS
stackoverflowより textarea:focus, input[type="text"]:focus, input[type="password"]:focus, input[type="datetime"]:focus, input[type="datetime-local"]:focus, input[type="date"]:focus, input[type="month"]:focus, input[type="time"]:focus, inpu…
stackoverflowより textarea:focus, input[type="text"]:focus, input[type="password"]:focus, input[type="datetime"]:focus, input[type="datetime-local"]:focus, input[type="date"]:focus, input[type="month"]:focus, input[type="time"]:focus, inpu…