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HTML

              
                <div class="warning"><strong>Warning:</strong> Your browser does not support CSS container queries. Please open this demo in Chrome Canary with the experimental <i>#enable-container-queries</i> flag turned on.</div>

<h2>Responsive Button</h2>

<div class="cart-button-container">
  <button class="cart-button">
    <svg class="cart-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 173">
      <g class="plus-group">
        <line x1="278" y1="36" x2="278" y2="124" />
        <line x1="322" y1="80" x2="234" y2="80" />
      </g>
      <g class="cart-lines-group">
        <line x1="38" y1="68" x2="200" y2="68" />
        <line x1="83.54" y1="36.2" x2="95.69" y2="99.84" />
        <line x1="156.23" y1="36.2" x2="144.7" y2="99.84" />
      </g>
      <g class="cart-group">
        <polyline points="44 100 190.95 100 209.44 36 30.77 36 44.48 100" />
        <polyline points="185 131 51.44 131 44.78 99.91 24.46 5 0 5" />
        <circle cx="68" cy="152" r="16" />
        <circle cx="169" cy="152" r="16" />
      </g>
    </svg>
    <p class="cart-text"><span class="add">Add</span> <span class="to-cart">to cart</span></p>
  </button>
</div>

<br><br><br><br><br><br><br>

<h2>Demo Card with Responsive Button</h2>

<div class="product-card-container">
  <div class="product-card">
    <img src="https://web-dev.imgix.net/image/HodOHWjMnbNw56hvNASHWSgZyAf2/tzExaPLigFVwXKaCfJjN.png?auto=format&w=750" />
    <div>
      <h3 class="title">Neon Shapes Onesie</h3>
      <span class="price">$16.99</span>
      <p class="desc">The perfect onesie for your millenial baby. Peace, love, shapes and bright colors bring this piece to life for all seasons. Size: 3-6M. Handmade.</p>
      <!-- Button Component Start -->
      <div class="cart-button-container">
        <button class="cart-button">
          <svg class="cart-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 173">
            <g class="plus-group">
              <line x1="278" y1="36" x2="278" y2="124" />
              <line x1="322" y1="80" x2="234" y2="80" />
            </g>
            <g class="cart-lines-group">
              <line x1="38" y1="68" x2="200" y2="68" />
              <line x1="83.54" y1="36.2" x2="95.69" y2="99.84" />
              <line x1="156.23" y1="36.2" x2="144.7" y2="99.84" />
            </g>
            <g class="cart-group">
              <polyline points="44 100 190.95 100 209.44 36 30.77 36 44.48 100" />
              <polyline points="185 131 51.44 131 44.78 99.91 24.46 5 0 5" />
              <circle cx="68" cy="152" r="16" />
              <circle cx="169" cy="152" r="16" />
            </g>
          </svg>
          <p class="cart-text"><span class="add">Add</span> <span class="to-cart">to cart</span></p>
        </button>
      </div>
      <!-- Button Component End -->
    </div>
  </div>
</div>

<br><br><br><br><br><br><br>
<br><br><br><br><br><br><br>
<br><br><br><br><br><br><br>
<br><br><br><br><br><br><br>
<br><br><br><br><br><br><br>

<h2>Responsive Grid with Responsive Demo Cards</h2>

<main class="product-grid">
  <div class="product-card-container">
    <div class="product-card">
      <img src="https://web-dev.imgix.net/image/HodOHWjMnbNw56hvNASHWSgZyAf2/tzExaPLigFVwXKaCfJjN.png?auto=format&w=750" />
      <div>
        <h3 class="title">Neon Shapes Onesie</h3>
        <span class="price">$16.99</span>
        <p class="desc">The perfect onesie for your millenial baby. Peace, love, shapes and bright colors bring this piece to life for all seasons. Size: 3-6M. Handmade.</p>
        <!-- Button Component Start -->
        <div class="cart-button-container">
          <button class="cart-button">
            <svg class="cart-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 173">
              <g class="plus-group">
                <line x1="278" y1="36" x2="278" y2="124" />
                <line x1="322" y1="80" x2="234" y2="80" />
              </g>
              <g class="cart-lines-group">
                <line x1="38" y1="68" x2="200" y2="68" />
                <line x1="83.54" y1="36.2" x2="95.69" y2="99.84" />
                <line x1="156.23" y1="36.2" x2="144.7" y2="99.84" />
              </g>
              <g class="cart-group">
                <polyline points="44 100 190.95 100 209.44 36 30.77 36 44.48 100" />
                <polyline points="185 131 51.44 131 44.78 99.91 24.46 5 0 5" />
                <circle cx="68" cy="152" r="16" />
                <circle cx="169" cy="152" r="16" />
              </g>
            </svg>
            <p class="cart-text"><span class="add">Add</span> <span class="to-cart">to cart</span></p>
          </button>
        </div>
        <!-- Button Component End -->
      </div>
    </div>
  </div>
  <div class="product-card-container">
    <div class="product-card">
      <img src="https://web-dev.imgix.net/image/HodOHWjMnbNw56hvNASHWSgZyAf2/tzExaPLigFVwXKaCfJjN.png?auto=format&w=750" />
      <div>
        <h3 class="title">Neon Shapes Onesie</h3>
        <span class="price">$16.99</span>
        <p class="desc">The perfect onesie for your millenial baby. Peace, love, shapes and bright colors bring this piece to life for all seasons. Size: 3-6M. Handmade.</p>
        <!-- Button Component Start -->
        <div class="cart-button-container">
          <button class="cart-button">
            <svg class="cart-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 173">
              <g class="plus-group">
                <line x1="278" y1="36" x2="278" y2="124" />
                <line x1="322" y1="80" x2="234" y2="80" />
              </g>
              <g class="cart-lines-group">
                <line x1="38" y1="68" x2="200" y2="68" />
                <line x1="83.54" y1="36.2" x2="95.69" y2="99.84" />
                <line x1="156.23" y1="36.2" x2="144.7" y2="99.84" />
              </g>
              <g class="cart-group">
                <polyline points="44 100 190.95 100 209.44 36 30.77 36 44.48 100" />
                <polyline points="185 131 51.44 131 44.78 99.91 24.46 5 0 5" />
                <circle cx="68" cy="152" r="16" />
                <circle cx="169" cy="152" r="16" />
              </g>
            </svg>
            <p class="cart-text"><span class="add">Add</span> <span class="to-cart">to cart</span></p>
          </button>
        </div>
        <!-- Button Component End -->
      </div>
    </div>
  </div>
  <div class="product-card-container">
    <div class="product-card">
      <img src="https://web-dev.imgix.net/image/HodOHWjMnbNw56hvNASHWSgZyAf2/tzExaPLigFVwXKaCfJjN.png?auto=format&w=750" />
      <div>
        <h3 class="title">Neon Shapes Onesie</h3>
        <span class="price">$16.99</span>
        <p class="desc">The perfect onesie for your millenial baby. Peace, love, shapes and bright colors bring this piece to life for all seasons. Size: 3-6M. Handmade.</p>
        <!-- Button Component Start -->
        <div class="cart-button-container">
          <button class="cart-button">
            <svg class="cart-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 173">
              <g class="plus-group">
                <line x1="278" y1="36" x2="278" y2="124" />
                <line x1="322" y1="80" x2="234" y2="80" />
              </g>
              <g class="cart-lines-group">
                <line x1="38" y1="68" x2="200" y2="68" />
                <line x1="83.54" y1="36.2" x2="95.69" y2="99.84" />
                <line x1="156.23" y1="36.2" x2="144.7" y2="99.84" />
              </g>
              <g class="cart-group">
                <polyline points="44 100 190.95 100 209.44 36 30.77 36 44.48 100" />
                <polyline points="185 131 51.44 131 44.78 99.91 24.46 5 0 5" />
                <circle cx="68" cy="152" r="16" />
                <circle cx="169" cy="152" r="16" />
              </g>
            </svg>
            <p class="cart-text"><span class="add">Add</span> <span class="to-cart">to cart</span></p>
          </button>
        </div>
        <!-- Button Component End -->
      </div>
    </div>
  </div>
  <div class="product-card-container">
    <div class="product-card">
      <img src="https://web-dev.imgix.net/image/HodOHWjMnbNw56hvNASHWSgZyAf2/tzExaPLigFVwXKaCfJjN.png?auto=format&w=750" />
      <div>
        <h3 class="title">Neon Shapes Onesie</h3>
        <span class="price">$16.99</span>
        <p class="desc">The perfect onesie for your millenial baby. Peace, love, shapes and bright colors bring this piece to life for all seasons. Size: 3-6M. Handmade.</p>
        <!-- Button Component Start -->
        <div class="cart-button-container">
          <button class="cart-button">
            <svg class="cart-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 173">
              <g class="plus-group">
                <line x1="278" y1="36" x2="278" y2="124" />
                <line x1="322" y1="80" x2="234" y2="80" />
              </g>
              <g class="cart-lines-group">
                <line x1="38" y1="68" x2="200" y2="68" />
                <line x1="83.54" y1="36.2" x2="95.69" y2="99.84" />
                <line x1="156.23" y1="36.2" x2="144.7" y2="99.84" />
              </g>
              <g class="cart-group">
                <polyline points="44 100 190.95 100 209.44 36 30.77 36 44.48 100" />
                <polyline points="185 131 51.44 131 44.78 99.91 24.46 5 0 5" />
                <circle cx="68" cy="152" r="16" />
                <circle cx="169" cy="152" r="16" />
              </g>
            </svg>
            <p class="cart-text"><span class="add">Add</span> <span class="to-cart">to cart</span></p>
          </button>
        </div>
        <!-- Button Component End -->
      </div>
    </div>
  </div>
  <div class="product-card-container">
    <div class="product-card">
      <img src="https://web-dev.imgix.net/image/HodOHWjMnbNw56hvNASHWSgZyAf2/tzExaPLigFVwXKaCfJjN.png?auto=format&w=750" />
      <div>
        <h3 class="title">Neon Shapes Onesie</h3>
        <span class="price">$16.99</span>
        <p class="desc">The perfect onesie for your millenial baby. Peace, love, shapes and bright colors bring this piece to life for all seasons. Size: 3-6M. Handmade.</p>
        <!-- Button Component Start -->
        <div class="cart-button-container">
          <button class="cart-button">
            <svg class="cart-icon" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 320 173">
              <g class="plus-group">
                <line x1="278" y1="36" x2="278" y2="124" />
                <line x1="322" y1="80" x2="234" y2="80" />
              </g>
              <g class="cart-lines-group">
                <line x1="38" y1="68" x2="200" y2="68" />
                <line x1="83.54" y1="36.2" x2="95.69" y2="99.84" />
                <line x1="156.23" y1="36.2" x2="144.7" y2="99.84" />
              </g>
              <g class="cart-group">
                <polyline points="44 100 190.95 100 209.44 36 30.77 36 44.48 100" />
                <polyline points="185 131 51.44 131 44.78 99.91 24.46 5 0 5" />
                <circle cx="68" cy="152" r="16" />
                <circle cx="169" cy="152" r="16" />
              </g>
            </svg>
            <p class="cart-text"><span class="add">Add</span> <span class="to-cart">to cart</span></p>
          </button>
        </div>
        <!-- Button Component End -->
      </div>
    </div>
  </div>

</main>
              
            
!

CSS

              
                :root {
  --btn-bg: #7fffd0;
  --btn-border: magenta;
  --text: black;
}

body {
  font-family: system-ui, Roboto;
}

// Set up the SVG
.plus-group > line {
  stroke-width: 20px;
  stroke: var(--text);
}

.cart-lines-group > line,
.cart-group > polyline,
.cart-group > circle {
  stroke-width: 10px;
  stroke: var(--text);
  fill: none;
}

// Style the button
.cart-button {
  background: var(--btn-bg);
  border: 2px dashed var(--btn-border);
  box-shadow: 6px 6px 0 var(--btn-border);
  max-width: 60px;
  display: inline-block;
  height: 3rem;
  border-radius: 10px;
}

.cart-text {
  text-transform: uppercase;
  letter-spacing: 0.8px;
  font-size: 18px;
  line-height: 0;
  padding: 0.25rem;
}

// Make up for "+" viewport spacing
.cart-icon {
  margin-right: -0.5rem;
}

// Mobile-first (smallest-up design)
.add-group,
.to-cart-group,
.plus-group,
.cart-lines-group,
.add,
.to-cart {
  display: none;
}

//  Enable containment on parent
.cart-button-container {
  container-type: inline-size;
  width: 100%;
}

.cart-icon {
  container-type: inline-size;
  width: 100%;
  height: 100%;
}

// Style children

// Cart lines at 30px or wider
@container (min-width: 30px) {
  .cart-lines-group {
    display: block;
  }
}

// Add "+" at 50px or wider
@container (min-width: 50px) {
  .plus-group {
    display: block;
  }
}

// "Add" instead of "+" at 100px
@container (min-width: 100px) {
  .cart-button {
    padding: 0 1rem;
    display: grid;
    max-width: 120px;
    grid-template-columns: 1fr 1fr;
  }

  .plus-group {
    display: none;
  }

  .cart-text .add {
    display: inline-block;
  }

  .cart-icon {
    margin-right: 0;
  }
}

// "Add to cart" for wider spaces
@container (min-width: 220px) {
  .cart-button {
    max-width: 260px;
    grid-template-columns: 1fr 3fr;
  }

  .cart-text .to-cart {
    display: inline-block;
  }
}

// Product Card
.product-card {
  padding: 1rem;
  border: 3px solid var(--btn-bg);
  text-align: center;
}

.product-card img {
  width: 100%;
  display: block;
  margin: 0 auto;
}

.product-card .desc {
  display: none;
}

.product-card .title {
  text-transform: uppercase;
  color: magenta;
  font-size: 1rem;
}

.product-card .price {
  display: block;
  margin: 1rem 0;
  line-height: 0;
  font-style: italic;
  color: #00b371;
}

// Product Card Responsive
.product-card-container {
  container-type: inline-size;
  container-name: product-card-container;
  width: 100%;
  max-width: 640px;
}

.product-card .cart-button {
  margin: 0 auto;
  container-name: product-card-container;
}

@container (min-width: 200px) {
  .product-card .desc {
    display: block;
  }

  .product-card {
    padding: 1rem 1rem 2rem;
    border: 5px solid var(--btn-bg);
    text-align: left;
  }

  .product-card .title {
    font-size: 1.25rem;
  }

  .product-card .price {
    font-size: 1rem;
  }
}

@container (min-width: 250px) {
  .product-card {
    border: 11px solid var(--btn-bg);
  }

  .product-card .title {
    font-size: 1.5rem;
  }

  .product-card .price {
    font-size: 1.25rem;
  }
}

@container product-card-container (min-width: 400px) {
  .product-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 2rem;
  }

  .product-card .cart-button {
    margin: 0;
  }
}

// Warning Bit
.warning {
  max-width: 460px;
  margin: 2rem auto;
  background: #ffcebf;
  border: 1px solid tomato;
  padding: 1rem;
}

@supports (container: inline-size) {
  .warning {
    display: none;
  }
}

// Responsive Grid
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

              
            
!

JS

              
                
              
            
!
999px

Console