width: $100\%$;

padding: $12$px $20$px;

margin: $8$px $0$;

box$-$sizing: border$-$box;

border: $3$px solid #ccc;

$-$webkit$-$transition: $0\mathrm{.}5$s;

transition: $0\mathrm{.}5$s;

outline: none;