Pen highlighter effect in css

Question

I want to create a highlight effect that resembles a highlight made with a pen. i.e. it has wavy tops and bottoms and a rough start and end, like in this picture.

Answer 1

Using CSS only, the closest you can get to your screenshot is something like this :

.green-highlight, .pink-highlight, .yellow-highlight {
    -webkit-border-radius: 5px;
    -moz-border-radius: 5px;
    border-radius: 5px;
    padding-left: 3px;
 }

.green-highlight {
    background: #99FFCC; /* Default color, all browsers */
}

.green-highlight::selection {
    background: #99CCCC; /* Selection color, WebKit/Blink Browsers */
}

.green-highlight::-moz-selection {
    background: #99CCCC; /* Selection color, Gecko Browsers */
}

.pink-highlight {
    background: #FFCCFF; /* Default color, all browsers */
}

.pink-highlight::selection {
    background: #FF99FF; /* Selection color, WebKit/Blink Browsers */
}

.pink-highlight::-moz-selection {
    background: #FF99FF; /* Selection color, Gecko Browsers */
}

.yellow-highlight {
    background: #FFFFCC; /* Default color, all browsers */
}

.yellow-highlight::selection {
    background: #FFFF66; /* Selection color, WebKit/Blink Browsers */
}

.yellow-highlight::-moz-selection {
    background: #FFFF66; /* Selection color, Gecko Browsers */
}

  
      So write with a combination of short, medium,
      and long sentences. Create a sound that pleases
      the reader's ear.
  
  
      Don't just write words.
  
  
       Write music.
  

If that's not close enough, I'm afraid you have to use images.