index.css

body {
    margin: 0;
    font-family: Arial, sans-serif;
    display: flex;
    flex-direction: column;
    height: 100vh;
  }
  
  .toolbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    background-color: #f1f1f1;
    border-bottom: 1px solid #ccc;
    flex-wrap: wrap;
  }
  
  .toolbar label {
    font-size: 14px;
  }
  
  input[type="color"] {
    width: 40px;
    height: 40px;
    padding: 0;
  }
  
  input[type="range"] {
    width: 100px;
  }
  
  button {
    padding: 8px 12px;
    font-size: 14px;
    cursor: pointer;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
  }
  
  button:hover {
    background-color: #45a049;
  }
  
  canvas {
    flex-grow: 1;
    width: 100%;
    height: 100%;
    background-color: #fff;
    cursor: crosshair;
    box-sizing: border-box;
  }
  
  /* Mobile responsiveness */
  @media (max-width: 600px) {
    .toolbar {
      flex-direction: column;
      align-items: flex-start;
    }
  
    input[type="color"], input[type="range"], button {
      width: 100%;
      margin-bottom: 5px;
    }
  
    input[type="color"] {
      width: 40px;
      height: 40px;
    }
  
    input[type="range"] {
      width: 80%;
    }
  
    button {
      width: 100%;
    }
  
    canvas {
      width: 100%;
      height: auto;  /* Adjust the canvas height to maintain aspect ratio */
    }
  }
  
  @media (max-width: 400px) {
    .toolbar {
      padding: 8px;
    }
  
    input[type="color"] {
      width: 35px;
      height: 35px;
    }
  
    input[type="range"] {
      width: 70%;
    }
  
    button {
      padding: 6px 10px;
      font-size: 12px;
    }
  }