javascript - How to make background transparent while bootstrap loader -


i want make bootstrap loading image while api returns result. how can make background transparent?

here html markup , css:

<div class="loader" ng-hide="data.length > 0"></div>      <style>  .loader {    border: 16px solid #d4d4d4;    border-radius: 50%;    border-top: 16px solid #3498db;    width: 120px;    height: 120px;      position: fixed;      top:100px;      bottom: 0;      left: 0;      right: 0;      margin: auto;      z-index: 99999999;    -webkit-animation: spin 2s linear infinite;    animation: spin 2s linear infinite;  }  @keyframes spin {      0% { transform: rotate(0deg); }      100% { transform: rotate(360deg); }  }  </style>

add background-color: transparent .loader

<div class="loader" ng-hide="data.length > 0"></div>      <style>  .loader {    border: 16px solid #d4d4d4;    border-radius: 50%;    border-top: 16px solid #3498db;    width: 120px;    background-color: transparent;    height: 120px;      position: fixed;      top:100px;      bottom: 0;      left: 0;      right: 0;      margin: auto;      z-index: 99999999;    -webkit-animation: spin 2s linear infinite;    animation: spin 2s linear infinite;  }  @keyframes spin {      0% { transform: rotate(0deg); }      100% { transform: rotate(360deg); }  }  </style>


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