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pradeep kumar yadavpradeep kumar yadav 

Progress Bar in Visualforce Page

I am using this code from this link 
<div class="slds-progress-ring">
  <div class="slds-progress-ring__progress" role="progressbar" aria-valuemin="0" aria-valuemax="100" aria-valuenow="100">
    <svg viewBox="-1 -1 2 2">
      <path class="slds-progress-ring__path" id="slds-progress-ring-path" d="M 1 0 A 1 1 0 1 1 1 -2.4492935982947064e-16 L 0 0" />
  <div class="slds-progress-ring__content"></div>

But a round black ring appears.
I tried every documentation and process specified in trailhead