<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <link rel="preconnect" href="https://fonts.googleapis.com" />
    <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />
    <link
      href="https://fonts.googleapis.com/css2?family=Lato:ital,wght@0,100;0,300;0,400;0,700;0,900;1,100;1,300;1,400;1,700;1,900&display=swap"
      rel="stylesheet"
    />
  </head>
  <body>
    <div>
      <div id="resizable" class="resizable">
        <div class="example">
          <p class="text text--2xs">My container is less than 101px wide</p>
          <p class="text text--xs">My container is betwween 101px and 360px</p>
          <p class="text text--sm">My container is between 361px and 499px</p>
          <p class="text text--md">My container is between 500px and 699px</p>
          <p class="text text--lg">My container is between 700px and 899px</p>
          <p class="text text--xl">My container is between 900px and 1099px</p>
          <p class="text text--2xl">
            My container is wider than 1099px
          </p>
        </div>
      </div>
      <p>
        Current width:
        <span id="current_width"></span>
      </p>
    </div>
  </body>
</html>

p {
  font-famile: Lato;
}

.resizable {
  resize: horizontal;
  overflow: scroll;
  width: 350px;
  height: 100px;
  font-family: Lato;
  container: pagination / inline-size;
  --button-width: 36px;
}

/** Base style */
.resizable {
  resize: horizontal;
  overflow: scroll;
  width: 350px;
  font-family: Lato;
  container: example / inline-size;
  --button-width: 36px;
}

/** Base style */
 .text {
    width: 100%;
    height: 100%;
    color: black;
    display: none;
     &--2xs {
       color: #39FEA3;
     }
    &--xs {
      color: #f0f;
    }
    &--sm {
      color: #009018;
    }
    &--md {
      color: #f00;
    }
    &--lg {
      color: #00f;
    }
    &--xl {
      color: #ffc800;
    }
    &--2xl {
      color: #00ffbb;
    }
 }

/* Container queries */
@container example (max-width: 100px) {
  .text {
    display: none;
    &--2xs {
      display: inline;
    }
  }
}

@container example (min-width: 101px) {
  .text {
    display: none;
    &--xs {
      display: inline;
    }
  }
}

@container example (min-width: 361px) and (max-width: 499px) {
  .text {
    display: none;
    &--sm {
      display: inline;
    }
  }
}

@container example (min-width: 500px) and (max-width: 699px) {
  .text {
    display: none;
    &--md {
      display: inline;
    }
  }
}

@container example (min-width: 700px) and (max-width: 899px) {
  .text {
    display: none;
    &--lg {
      display: inline;
    }
  }
}

@container example (min-width: 900px) and (max-width: 1099px) {
  .text {
    display: none;
    &--xl {
      display: inline;
    }
  }
}

@container example (min-width: 1100px) {
  .text {
    display: none;
    &--2xl {
      display: inline;
    }
  }
}
View Compiled 
const $target = document.querySelector('#resizable');
const $currentWidth = document.querySelector('#current_width');

window.addEventListener('mousemove', (e) => { 
  const width = $target.getBoundingClientRect().width;
  $currentWidth.innerHTML = `${width}px`;
});

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

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