.c-btn-underline{pointer-events:none}.c-btn-underline>a,.c-btn-underline>button{position:relative;display:inline-block;pointer-events:auto}.c-btn-underline>a[disabled],.c-btn-underline>button[disabled]{pointer-events:none}.c-btn-underline>a>.line,.c-btn-underline>button>.line{width:100%;height:2rem;background-color:currentColor;position:absolute;left:0;bottom:0;transform:scaleX(0) scaleY(.5);transform-origin:right;transition:transform .4s ease-out}.c-btn-underline.is-always>a>.line,.c-btn-underline.is-always>button>.line,.c-btn-underline>a:hover>.line,.c-btn-underline>button:hover>.line{transform:scaleX(1) scaleY(.5);transform-origin:left}.c-btn-underline.is-always>a:hover>.line,.c-btn-underline.is-always>button:hover>.line{transform:scaleX(0) scaleY(.5);transform-origin:right}