$width: 28rem; $height: 56rem; $color-write: #ffffff; $color-main: #2590c2; $color-light-main: #69cbe9; $color-gray: #eee; $color-light-gray: #fff; $color-default: #666666; $box-shadow: #aaaaaa; $color-message-bg: #C9E7FF; $color-box-bg: #f3f3f3; $small-size: 1.2rem; $default-size: 1.4rem; $large-size: 1.6rem; $x-large-size: 1.8rem;