.subscription-form-section-component { $trans-speed: 100ms; width: 200px; input { margin: 5px; width: calc(100% - 10px); padding: 3px; border: 1px solid $c-text; font-size: 14px; text-align: center; transition: border-color $trans-speed; &.error { border-color: $c-error; } &::placeholder, &[type="submit"] { text-transform: uppercase; } } }