context menu css

context.html

<menu class="ContextMenu">
  <div class="section">
    <li><button>Action 1</button></li>
    <li><button>Action 2</button></li>
    <li><button>Action 3</button></li>
  </div>
  
  <li><button>Action 4<div class="end">bree</div></button></li>
</menu>  

menu.css

:root {
  --menu-primary-background: #419bf9;
  --menu-primary-text: #fff;
  
  --menu-text: #000;
  --menu-canvas: rgba(246,246,246,0.6);
  --menu-border: rgba(0,0,0,0.05);

  --menu-padding: 6px;
  --menu-rounded: 8px;
}

html {
  background: #333;
}

* {
  line-height: 1;
  font-size: 1em;
}

.ContextMenu {
  left: 50px;
  top: 50px;
}

.ContextMenu {
  /* define here because it's only used in fine more */
  --menu-divider: #e8e8e8;
  
  /* resets */
  margin: 0;
  padding: 0;
  list-style: none;
  contain: content;
  
  /* positioning / sizing */
  position: absolute;
  width: 207px;
  
  /* styles */
  color: var(--menu-text);
  background-color: var(--menu-canvas);
  border-radius: var(--menu-rounded);
  padding: var(--menu-padding);
  border: 1px solid var(--menu-border);
}

.ContextMenu button {
  appearance: none;
  border: none;
  color: inherit;
  
  width: 100%;
  height: 24px;
  
  cursor: pointer;
  border-radius: calc(var(--menu-rounded) / 2);
  
  /* for now */
  background-color: transparent;
}

.ContextMenu button:is(:hover,:active,:focus-visible) {
  background: var(--menu-primary-background);
  color: var(--menu-primary-text);
}

.ContextMenu button {
  padding-inline: var(--menu-padding);
 
  display: grid;
  grid: 1fr / [left] 1fr [right] auto;
  align-items: center;
  text-align: start;
}


.ContextMenu .divider {
  margin-block: 4px;
  height: 1px;
  background: var(--menu-divider);
}

/* automaticaly divide sections */
.ContextMenu .section {
  border-bottom: 1px solid var(--menu-divider);
  margin-bottom: 4px;
  padding-bottom: 4px;
}

@media (pointer: coarse) {
  :root {
    --border-radius: 12px;
    
    --menu-canvas: rgba(237, 237, 237, 0.8);
    --menu-border: transparent;

    --menu-padding: 16px;
    --menu-rounded: 12px;
  }
  
  .ContextMenu {
    --menu-small-divider: rgba(60, 60, 67, 0.12);
    --menu-large-divider: rgba(118, 118, 128, 0.12);
    
    padding: 0;
  }
  
  .ContextMenu button {
    height: 46px;
    padding-inline: var(--menu-padding);
    border-radius: 0;
  }
  
  .ContextMenu li:not(:last-child) {
    border-block-end: 1px solid var(--menu-small-divider);
  }
  
  .ContextMenu .divider {
    height: 8px;
    margin: 0;
    background-color: var(--menu-large-divider);
  }
  
  .ContextMenu .section {
    margin: 0;
    padding: 0;
    border-bottom: 8px solid var(--menu-large-divider);
  }
}

@media (prefers-contrast: more) {
  :root {
    --menu-primary-background: #419bf9;
    --menu-primary-text: #fff;

    --menu-canvas: rgba(246,246,246,0.85);
    --menu-border: rgba(33,33,33,0.65);
  }
  
  .ContextMenu {
    /* temporary */
    --menu-divider: var(--menu-border);
    --menu-small-divider: rgba(60, 60, 67, 1);
    --menu-large-divider: rgba(118, 118, 128, 1);
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --menu-text: #fff;
    --menu-canvas: rgba(0, 0, 0, 0.41);
    --menu-border: rgba(84, 84, 88, 0.32);
  }
  
  .ContextMenu {
    /* temporary */
    --menu-divider: rgba(84, 84, 88, 0.32);
    --menu-small-divider: rgba(84, 84, 88, 0.32);
    --menu-large-divider: rgba(64, 64, 72, 0.24);
  }

  @media (prefers-contrast: more) {
    :root {
      --menu-canvas: rgba(0, 0, 0, 0.75);
      --menu-border: rgba(255, 255, 255, 0.75);
    }

    .ContextMenu {
      /* temporary */
      --menu-divider: var(--menu-border);
      --menu-small-divider: var(--menu-border);
      --menu-large-divider: rgba(200, 200, 200, 0.75);
    }
  }
}