Сookies. Всплывающее окошко

      <div class="cookie">
    <div class="cookie__title">Мы используем файлы <a href="#">cookie</a></div>
    <div class="cookie__text">
        <p>для того, чтобы предоставить вам больше возможностей при использовании сайта</p>
    </div>
    <div class="cookie__button">
        <a href="javascript://">Хорошо</a>
    </div>
</div>
    

      .cookie {
  position: fixed;
  bottom: 0;
  right: 0;
  background-color: #f9f8f8;
  padding: 24px;
  width: 296px;
  z-index: 1000;
}
.cookie > *:first-child {
  margin-top: 0 !important;
}
.cookie > *:nth-last-child(-n + 1) {
  margin-bottom: 0 !important;
}
.cookie__title {
  font-size: 24px;
  font-weight: 400;
  line-height: 28px;
  margin: 8px 0;
}
.cookie__title a {
  color: #4ebe99;
  border-bottom: 1px solid #4ebe99;
  transition: border-color .3s;
}
.cookie__title a:hover {
  border-color: transparent;
}
.cookie__text {
  font-size: 16px;
  font-weight: 300;
  line-height: 20px;
  margin: 8px 0;
}
.cookie__text p {
  margin: 0;
}
.cookie__button {
  margin: 24px 0;
}
.cookie__button a {
  display: inline-flex;
  border-radius: 100px;
  background-color: #4ebe99;
  font-size: 14px;
  font-weight: 400;
  line-height: 24px;
  color: #fff;
  padding: 7px 28px;
  transition: background-color .3s;
}
.cookie__button a:hover {
  background-color: #83d2b8;
}

@media only screen and (max-width: 639px) {
    .cookie {
      border-radius: 16px 16px 0 0;
      padding: 16px;
      width: 100%;
    }
    .cookie__title {
      font-size: 18px;
      font-weight: 300;
      line-height: 24px;
    }
    .cookie__text {
      font-size: 12px;
      font-weight: 300;
      line-height: 14px;
    }
    .cookie__button {
      margin: 12px 0;
    }
}

    

      @import "../helpers/helpers";

.cookie {
    position: fixed;
    bottom: 0;
    right: 0;
    background-color: #f9f8f8;
    padding: 24px;
    width: 296px;
    z-index: 1000;
    @include resetMarginTop();
    @include resetMarginBottom();
    @include max-screen(639px) {
        border-radius: 16px 16px 0 0;
        padding: 16px;
        width: 100%;
    }
}
.cookie__title {
    font-size: 24px;
    font-weight: 400;
    line-height: 28px;
    margin: 8px 0;
    @include max-screen(639px) {
        font-size: 18px;
        font-weight: 300;
        line-height: 24px;
    }
    a {
        color: #4ebe99;
        border-bottom: 1px solid #4ebe99;
        transition: border-color .3s;
        &:hover {
            border-color: transparent;
        }
    }
}
.cookie__text {
    font-size: 16px;
    font-weight: 300;
    line-height: 20px;
    margin: 8px 0;
    @include max-screen(639px) {
        font-size: 12px;
        font-weight: 300;
        line-height: 14px;
    }
    p {
        margin: 0;
    }
}
.cookie__button {
    margin: 24px 0;
    @include max-screen(639px) {
        margin: 12px 0;
    }
    a {
        display: inline-flex;
        border-radius: 100px;
        background-color: #4ebe99;
        font-size: 14px;
        font-weight: 400;
        line-height: 24px;
        color: #fff;
        padding: 7px 28px;
        transition: background-color .3s;
        &:hover {
            background-color: #83d2b8;
        }
    }
}
    

      const cookie = document.querySelector('.cookie');
if (document.querySelector('.cookie')) {
    if (document.cookie.indexOf("warning") != -1) {
        cookie.remove();
    }
    const apply = cookie.querySelector(".cookie__button");
    apply.addEventListener("click", () => {
        cookie.remove();
        document.cookie = "warning=true; max-age=2592000; path=/";
    });
}