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HTML

About HTML Preprocessors

HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

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Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

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Insecure Resource

The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.

CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

Learn more · Versions

CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

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Babel includes JSX processing.

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You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

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HTML 

              
                <link href="
https://cdn.jsdelivr.net/npm/reset.css@2.0.2/reset.min.css
" rel="stylesheet">

 <link
            rel="stylesheet"
            href="https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.css"
        />

<div class="container">
  <section class="events js-slider-root">
    <div class="events__inner">
        <div class="page__center">
            
            <nav class="nav-arrows">
              <button class="nav-arrows__item js-slider-prev">
                <svg id="i-chevron-left" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32" fill="none" stroke="currentcolor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2">
                  <path d="M20 30 L8 16 20 2" />
                </svg>
              </button>
              <button class="nav-arrows__item js-slider-next">
                <svg id="i-chevron-right" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32" fill="none" stroke="currentcolor" stroke-linecap="round" stroke-linejoin="round" stroke-width="2">
                  <path d="M12 30 L24 16 12 2" />
                </svg>
              </button>
            </nav>

            <div class="slider-events">
                <div class="swiper">
                  <div class="swiper-wrapper">
                      <div class="swiper-slide">
                          <article class="card-events">
                              <div
                                  class="card-events__image"
                                  style="
                                      background-image: url(https://loremflickr.com/500/600/industrial?random=1);
                                  "
                              ></div>
                              <div
                                  class="card-events__hide js-set-height"
                              >
                                  <div>
                                      <time
                                          datetime="2023-10-16"
                                          class="card-events__time"
                                          >16 октября
                                          18:00</time
                                      >
                                      <nav
                                          class="card-events__tags"
                                      >
                                          <ul>
                                              <li>
                                                  <a
                                                      href="#"
                                                      >Абитуриентам</a
                                                  >
                                              </li>

                                              <li>
                                                  <a
                                                      href="#"
                                                      >Институт
                                                      теплоэнергетики</a
                                                  >
                                              </li>
                                          </ul>
                                      </nav>
                                  </div>
                              </div>
                              <h2 class="card-events__h1">
                                  Конкурс «Пятьдесят
                                  лучших инновационных
                                  идей для Республики
                                  Татарстан» – 2023
                              </h2>
                              <a
                                  href="#"
                                  class="card-events__btn-apply"
                              >
                                  Участвовать
                              </a>
                          </article>
                      </div>
                      <div class="swiper-slide">
                          <article class="card-events">
                              <div
                                  class="card-events__image"
                                  style="
                                      background-image: url(https://loremflickr.com/500/600/industrial?random=2);
                                  "
                              ></div>
                              <div
                                  class="card-events__hide js-set-height"
                              >
                                  <div>
                                      <time
                                          datetime="2023-10-16"
                                          class="card-events__time"
                                          >19 октября
                                          14:00</time
                                      >
                                      <nav
                                          class="card-events__tags"
                                      >
                                          <ul>
                                              <li>
                                                  <a
                                                      href="#"
                                                      >Студентам</a
                                                  >
                                              </li>

                                              <li>
                                                  <a
                                                      href="#"
                                                      >Институт
                                                      теплоэнергетики</a
                                                  >
                                              </li>
                                              <li>
                                                  <a
                                                      href="#"
                                                      >Аудитория
                                                      B-503</a
                                                  >
                                              </li>
                                          </ul>
                                      </nav>
                                  </div>
                              </div>
                              <h2 class="card-events__h1">
                                  Студенты ИЭЭ смогут
                                  пообщаться с
                                  работодателем
                              </h2>
                              <a
                                  href="#"
                                  class="card-events__btn-apply"
                              >
                                  Участвовать
                              </a>
                          </article>
                      </div>
                      <div class="swiper-slide">
                          <article class="card-events">
                              <div
                                  class="card-events__image"
                                  style="
                                      background-image: url(https://loremflickr.com/500/600/industrial?random=3);
                                  "
                              ></div>
                              <div
                                  class="card-events__hide js-set-height"
                              >
                                  <div>
                                      <time
                                          datetime="2023-10-16"
                                          class="card-events__time"
                                          >16 октября
                                          18:00</time
                                      >
                                      <nav
                                          class="card-events__tags"
                                      >
                                          <ul>
                                              <li>
                                                  <a
                                                      href="#"
                                                      >Абитуриентам</a
                                                  >
                                              </li>

                                              <li>
                                                  <a
                                                      href="#"
                                                      >Институт
                                                      теплоэнергетики</a
                                                  >
                                              </li>
                                          </ul>
                                      </nav>
                                  </div>
                              </div>
                              <h2 class="card-events__h1">
                                  Международный турнир по
                                  волейболу на призы Раиса
                                  Татарстана
                              </h2>
                              <a
                                  href="#"
                                  class="card-events__btn-apply"
                              >
                                  Участвовать
                              </a>
                          </article>
                      </div>
                      <div class="swiper-slide">
                          <article class="card-events">
                              <div
                                  class="card-events__image"
                                  style="
                                      background-image: url(https://loremflickr.com/500/600/industrial?random=1);
                                  "
                              ></div>
                              <div
                                  class="card-events__hide js-set-height"
                              >
                                  <div>
                                      <time
                                          datetime="2023-10-16"
                                          class="card-events__time"
                                          >16 октября
                                          18:00</time
                                      >
                                      <nav
                                          class="card-events__tags"
                                      >
                                          <ul>
                                              <li>
                                                  <a
                                                      href="#"
                                                      >Абитуриентам</a
                                                  >
                                              </li>

                                              <li>
                                                  <a
                                                      href="#"
                                                      >Институт
                                                      теплоэнергетики</a
                                                  >
                                              </li>
                                          </ul>
                                      </nav>
                                  </div>
                              </div>
                              <h2 class="card-events__h1">
                                  Конкурс «Пятьдесят
                                  лучших инновационных
                                  идей для Республики
                                  Татарстан» – 2023
                              </h2>
                              <a
                                  href="#"
                                  class="card-events__btn-apply"
                              >
                                  Участвовать
                              </a>
                          </article>
                      </div>
                      <div class="swiper-slide">
                          <article class="card-events">
                              <div
                                  class="card-events__image"
                                  style="
                                      background-image: url(https://loremflickr.com/500/600/industrial?random=2);
                                  "
                              ></div>
                              <div
                                  class="card-events__hide js-set-height"
                              >
                                  <div>
                                      <time
                                          datetime="2023-10-16"
                                          class="card-events__time"
                                          >19 октября
                                          14:00</time
                                      >
                                      <nav
                                          class="card-events__tags"
                                      >
                                          <ul>
                                              <li>
                                                  <a
                                                      href="#"
                                                      >Студентам</a
                                                  >
                                              </li>

                                              <li>
                                                  <a
                                                      href="#"
                                                      >Институт
                                                      теплоэнергетики</a
                                                  >
                                              </li>
                                              <li>
                                                  <a
                                                      href="#"
                                                      >Аудитория
                                                      B-503</a
                                                  >
                                              </li>
                                          </ul>
                                      </nav>
                                  </div>
                              </div>
                              <h2 class="card-events__h1">
                                  Студенты ИЭЭ смогут
                                  пообщаться с
                                  работодателем
                              </h2>
                              <a
                                  href="#"
                                  class="card-events__btn-apply"
                              >
                                  Участвовать
                              </a>
                          </article>
                      </div>
                      <div class="swiper-slide">
                          <article class="card-events">
                              <div
                                  class="card-events__image"
                                  style="
                                      background-image: url(https://loremflickr.com/500/600/industrial?random=3);
                                  "
                              ></div>
                              <div
                                  class="card-events__hide js-set-height"
                              >
                                  <div>
                                      <time
                                          datetime="2023-10-16"
                                          class="card-events__time"
                                          >16 октября
                                          18:00</time
                                      >
                                      <nav
                                          class="card-events__tags"
                                      >
                                          <ul>
                                              <li>
                                                  <a
                                                      href="#"
                                                      >Абитуриентам</a
                                                  >
                                              </li>

                                              <li>
                                                  <a
                                                      href="#"
                                                      >Институт
                                                      теплоэнергетики</a
                                                  >
                                              </li>
                                          </ul>
                                      </nav>
                                  </div>
                              </div>
                              <h2 class="card-events__h1">
                                  Международный турнир по
                                  волейболу на призы Раиса
                                  Татарстана
                              </h2>
                              <a
                                  href="#"
                                  class="card-events__btn-apply"
                              >
                                  Участвовать
                              </a>
                          </article>
                      </div>
                  </div>
              </div>
            </div>
        </div>
    </div>

  
</section>
</div>

        <script src="https://cdn.jsdelivr.net/npm/swiper@11/swiper-bundle.min.js"></script>
!

CSS 

              
                

* {
  box-sizing: border-box;
}

html {
  font-size: 10px !important;
}



a {
    text-decoration: none;
    color: currentColor;
}

.container {
  padding: 0 2rem;
}

@mixin reset-btn {
    display: inline-block;
    border: 0;
    padding: 0;
    background: none;
    font-family: inherit;
    cursor: pointer;
}

@mixin fill {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.nav-arrows {
    display: flex;
    align-items: center;
    gap: 2px;
    font-size: 1.1rem;

    &--white {
        .nav-arrows__item {
            background: #fff;
        }
    }

    &__item {
        @include reset-btn;
        width: 7.27273em;
    height: 3.63636em;
        background: #eff1f4;
        border-radius: 2em;
        display: flex;
        justify-content: center;
        align-items: center;
        font-size: inherit;

        &:not(.swiper-button-disabled):hover {
            background: #0047ba;

          svg {
            color: #fff;
          }
        }

        &.swiper-button-disabled {
            opacity: 0.5;
            cursor: default;
        }
    }

    svg {
      transform: scale(0.5);
    }
}

@media (max-width: 999.98px) {
    .nav-arrows {
        font-size: 0.9rem;
    }
}




.slider-events {
    border-radius: 2rem;
    overflow: hidden;

    &__inner {
        margin: 0 -0.6rem;
    }

    .swiper-wrapper {
        display: flex;
    }

    .swiper-slide {
        padding: 0 0.6rem;
        flex: 0 0 auto;
        width: 33.33%;
        display: flex;
        height: auto;
    }
}
@media (max-width: 999.98px) {
    .slider-events {
        margin: 0 -2rem;
        padding: 0 2rem;
        border-radius: 0;

        .swiper {
            overflow: visible;
        }

        .swiper-slide {
            width: 40rem;
        }
    }
}

@media (max-width: 799.98px) {
    .slider-events {
        .swiper-slide {
            width: 83%;
        }
    }
}

.card-events {
    position: relative;
    background: #0047ba;
    padding: 3.2rem;
    flex-grow: 1;
    border-radius: 2rem;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 51.5rem;

    &:hover {
        .card-events__image {
            opacity: 1;
            top: 0;
        }

        .card-events__hide {
            height: 0 !important;
            opacity: 0;
        }
    }

    > * {
        z-index: 1;
    }

    &__hide {
        transition: all 0.2s;
    }

    &__image {
        @include fill;
        top: 5%;
        background: no-repeat 50% 50% / cover;
        transform: scale(1.2);
        transition: all 0.2s;
        z-index: 0;
        opacity: 0;
    }

    &__time {
        font-size: 1.5rem;
        color: #fff;
    }

    &__tags {
        margin-top: 3.2rem;
        padding-bottom: 5rem;

        ul {
            display: flex;
            flex-wrap: wrap;
            gap: 0.4rem 0;
        }

        a {
            display: block;
            padding: 0.769231em 1.23077em;
            font-size: 1.3rem;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 6.5rem;
            color: #fff;

            &:hover {
                background: rgba(255, 255, 255, 0.3);
            }
        }
    }

    &__h1 {
        margin-bottom: 5rem;
        font-size: 3.2rem;
        font-weight: 500;
        color: #fff;
    }

    &__btn-apply {
        margin-top: auto;
        padding: 1.05556em 0.888889em;
        font-size: 1.8rem;
        text-align: center;
        border-radius: 1.2rem;
        background: #fff;

        &:hover {
            background: rgba(#fff, 0.8);
        }
    }
}

@media (max-width: 999.98px) {
    .card-events {
        padding: 1.6rem;
        border-radius: 0.8rem;
        min-height: 27rem;

        &__time {
            font-size: 1rem;
        }

        &__tags {
            margin-top: 1.6rem;
            padding-bottom: 2.4rem;

            a {
                font-size: 1rem;
            }
        }

        &__h1 {
            font-size: 1.4rem;
        }

        &__btn-apply {
            font-size: 1.4rem;
        }
    }
}
!

JS 

              
                
let $collection = null;

function setHeight() {
    $collection.each(function () {
        const height = $(this).children().height();
        $(this).height(height);
    });
}

$(function () {
    $collection = $(".js-set-height");

    setHeight();

    $(window).on(
        "resize",
        $.throttle(500, () => {
            setHeight();
        })
    );
});

$(function () {
    $(".slider-events").each(function () {
        const $root = $(this).closest(".js-slider-root");
        const swiper = new Swiper($(this).find(".swiper")[0], {
            speed: 600,
            slidesPerView: "auto",
            navigation: {
                nextEl: $root.find(".js-slider-next")[0],
                prevEl: $root.find(".js-slider-prev")[0],
            },
            breakpoints: {
                1000: {
                    slidesPerView: 3,
                },
            },
        });
    });
});
!
999px

Console