如何自动校正此灯箱中的图片大小？

Question

我正在尝试使此灯箱在我的网站上正常工作，但是图像并没有按其原始大小显示， 如您在此处所见 （单击“ Galeria de fotos”）。 如何编写以下代码来更正此问题？

 function openModal() { document.getElementById('myModal').style.display = "block"; } function closeModal() { document.getElementById('myModal').style.display = "none"; } var slideIndex = 1; showSlides(slideIndex); function plusSlides(n) { showSlides(slideIndex += n); } function currentSlide(n) { showSlides(slideIndex = n); } function showSlides(n) { var i; var slides = document.getElementsByClassName("mySlides"); var dots = document.getElementsByClassName("demo"); var captionText = document.getElementById("caption"); if (n > slides.length) {slideIndex = 1} if (n < 1) {slideIndex = slides.length} for (i = 0; i < slides.length; i++) { slides[i].style.display = "none"; } for (i = 0; i < dots.length; i++) { dots[i].className = dots[i].className.replace(" active", ""); } slides[slideIndex-1].style.display = "block"; dots[slideIndex-1].className += " active"; captionText.innerHTML = dots[slideIndex-1].alt; } 

 .row > .column { padding: 0 8px; } .row:after { content: ""; display: table; clear: both; } .column { float: left; width: 33.3%; } /* The Modal (background) */ .modal { display: none; position: fixed; z-index: 1; padding-top: 100px; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: black; } /* Modal Content */ .modal-content { position: relative; background-color: #fefefe; margin: auto; padding: 0; width: 90%; max-width: 1200px; } 

 <div role="tabpanel" class="tab-pane" id="messages"> <div class="trip-tab-gallery"> <ul> <div class="column"> <li><img src="images/tab-gallery-img-1.jpg" onclick="openModalhttps://s30.postimg.org/rxspwis5p/tab_gallery_img_1.jpgover-shadow"> </li> </div> <div class="column"> <li><img src="]https://s30.postimg.org/5n4uwjuvh/tab_gallery_img_2.jpg" onclick="openModal();currentSlide(2)" class="hover-shadow"> </li> </div> <div class="column"> <li><img src="https://s30.postimg.org/h0vzlhurx/tab_gallery_img_3.jpg" onclick="openModal();currentSlide(3)" class="hover-shadow"> </li> </div> <div class="column"> <li><img src="https://s30.postimg.org/eku67ncp9/tab_gallery_img_4.jpg" onclick="openModal();currentSlide(4)" class="hover-shadow"> </li> </div> </ul> <div id="myModal" class="modal"> <span class="close cursor" onclick="closeModal()">&times;</span> <div class="modal-content"> <div class="mySlides"> <div class="numbertext">1 / 4</div> <img src="https://s30.postimg.org/rxspwis5p/tab_gallery_img_1.jpg" style="width:100%"> </div> <div class="mySlides"> <div class="numbertext">2 / 4</div> <img src="]https://s30.postimg.org/5n4uwjuvh/tab_gallery_img_2.jpg" style="width:100%"> </div> <div class="mySlides"> <div class="numbertext">3 / 4</div> <img src="https://s30.postimg.org/h0vzlhurx/tab_gallery_img_3.jpg" style="width:100%"> </div> <div class="mySlides"> <div class="numbertext">4 / 4</div> <img src="https://s30.postimg.org/eku67ncp9/tab_gallery_img_4.jpg" style="width:100%"> </div> <a class="prev" onclick="plusSlides(-1)">&#10094;</a> <a class="next" onclick="plusSlides(1)">&#10095;</a> <div class="caption-container"> <p id="caption"></p> </div> <div class="column"> <img class="demo" src="https://s30.postimg.org/rxspwis5p/tab_gallery_img_1.jpg" onclick="currentSlide(1)" alt="Nature"> </div> <div class="column"> <img class="demo" src="]https://s30.postimg.org/5n4uwjuvh/tab_gallery_img_2.jpg" onclick="currentSlide(2)" alt="Trolltunga"> </div> <div class="column"> <img class="demo" src="https://s30.postimg.org/h0vzlhurx/tab_gallery_img_3.jpg" onclick="currentSlide(3)" alt="Mountains"> </div> <div class="column"> <img class="demo" src="https://s30.postimg.org/eku67ncp9/tab_gallery_img_4.jpg" onclick="currentSlide(4)" alt="Lights"> </div> </div> </div> </div> </div> 

Answer 1

我看到在所有图像上，您的宽度均为100％：

<img src="https://s30.postimg.org/5n4uwjuvh/tab_gallery_img_2.jpg" style="width:100%">

将宽度设置为100％将迫使图像扩展到容器的大小。 将其更改为最大宽度应该可以解决该问题，同时还要确保图像不会越过容器。

<img src="https://s30.postimg.org/5n4uwjuvh/tab_gallery_img_2.jpg" style="max-width:100%">

之后，您可以查看图像居中并使其较小时看起来不错。

旁注：我注意到在某些图像URL上有一个[ ，我猜这是一个错字？

更新：要使图像与中心对齐并“去除”背景：

添加以下CSS：

.mySlides{
    background: black;
    text-align: center;
}

这会将背景设置为黑色，以使其看起来不会太差，并使图片与中心对齐。