Custom milestone style

Hi, I want to know, can I customize the style of milestones through < SVG > < / SVG > or other code?

Hello,
You can change the style rules of the gantt_task_content element that is a child of the gantt_bar_milestone element:

  .gantt_bar_milestone .gantt_task_content{
    background: url("https://upload.wikimedia.org/wikipedia/commons/4/4f/SVG_Logo.svg") !important;
    transform: unset !important;
    border: unset !important;
  }

Here is an example:
http://snippet.dhtmlx.com/5/324afa839