How to "truncate" long strings with an ellipsis (...) for text that overflows its container

body{
    background-image: url("img_tree.gif");
    background-repeat: no-repeat;
    background-attachment: fixed;
}

<style>

 .circle:before {
                    content: ' \25CF';
                    font-size: 50px;
                    color: black;
                }
</style>

<span class="circle"></span>

img {
  mask-image: url(‘mask.png’) linear-gradient(-45deg,
                        rgba(0,0,0,1) 20%, rgba(0,0,0,0) 50%);
  mask-image: url(#masking); /*referencing to the element generated and defined in SVG code*/
} 

 .rotate {

  transform: rotate(-90deg);


  /* Legacy vendor prefixes that you probably don
                                

.truncate {
  width: 250px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/*EX:.container {
    padding: 0 15px;
// 576px window width and more
    @include sm {
        padding: 0 20px;
    }
// 992px window width and more
    @include lg {
        margin-left: auto;
        margin-right: auto;
        max-width: 1100px;
    } */

// Small tablets and large smartphones (landscape view)
$screen-sm-min: 576px;

// Small tablets (portrait view)
$screen-md-min: 768px;

// Tablets and small desktops
$screen-lg-min: 992px;

// Large tablets and desktops
$screen-xl-min: 1200px;


// Small devices
@mixin sm {
   @media (min-width: #{$screen-sm-min}) {
       @content;
   }
}

// Medium devices
@mixin md {
   @media (min-width: #{$screen-md-min}) {
       @content;
   }
}

// Large devices
@mixin lg {
   @media (min-width: #{$screen-lg-min}) {
       @content;
   }
}

// Extra large devices
@mixin xl {
   @media (min-width: #{$screen-xl-min}) {
       @content;
   }
}

<h1 class="ribbon">
   <strong class="ribbon-content">Everybody loves ribbons</strong>
</h1>

.dynamic-shadow {

  position: relative;

  width: rem;

  height: 10rem;

  background: linear-gradient(5deg, #d7ff, #00ffb8);
6
  z-index: 1;
7
}
8
.dynamic-shadow::after {

  content: '';
10
  width: 100%;

  height: 100%;

  position: absolute;

  background: inherit;

  top: 0.5rem;

  filter: blur(0.4rem);

  opacity: 0.7;

  z-index: -1;

}

​

 add_filter( 'jetpack_sharing_counts', '__return_false', 99 );
add_filter( 'jetpack_implode_frontend_css', '__return_false', 99 );
                                

ol li {
	 list-style-type: none;
     }
     
// OR

li {
	list-style-type: none;
}

.box-one {
	width: 100px;
	margin: 0 auto;
}

.box-two {
	width: 100px;
	margin-left: auto;
    margin-right: auto;
}

.gradient {
  background-image:
    linear-gradient(
      to right, 
      red, 
      blue,
      yellow, 
      green
    );
}

<a
	href="www.example.com"
    alt="text that describes image"
    target="_blank"
    download="/images/photo.jpg"
    hreflang="en"
    media="projection and (resolution:300dpi)"
    referrerpolicy="no-referrer"
    rel="external"
    type="text/html"
	ping="www.example.com/trackclicks"
/>
	Click here to visit our site!
</a>

const arrSum = arr => arr.reduce((a,b) => a + b, 0)
// arrSum([20, 10, 5, 10]) -> 45

<div class="slider">
    <div class="owl-carousel owl-theme sliderLogo">
        <div class="item"></div>
        <div class="item"></div>
    </div>
</div>


    $('.sliderLogo').owlCarousel({​​​​​​​
        loop: true,
        stagePadding: 0,
        margin: 0,
        autoWidth: false,
        lazyLoad: true,
        autoplay: true,
        nav: true,
        navContainer: '.customNav',
        navText: ["<i class='fal fa-long-arrow-left'></i>", "<i class='fal fa-long-arrow-right'></i>"],
        dots: true,
        autoplayHoverPause: true,
        smartSpeed: 1000,
        onLoadLazy: lazySrcset,
        onInitialize: showSlider,
        responsive: {​​​​​​​
            0: {​​​​​​​
                items: 3
            }​​​​​​​
        }​​​​​​​
    }​​​​​​​);