An alternative to keyframes in CSS?

Question

I need to create a bootloader, at the moment I am using the following code.

I would like to know if it can be rewritten using alternative syntax for keyframes(maybe transitions?).

Unfortunately, I use a build tool that overwrites the keyframesproperties of adding errors, and the generated CSS does not work , so I would like to work around this problem.

A JS solution is also possible by adding CSS inline.

.loadingSpinner {
    width: 50px;
    height: 50px;
    border: 5px solid #3498db;
    border-top-color: rgba(0, 0, 0, 0);
    border-left-color: rgba(0, 0, 0, 0);
    border-radius: 50%;
    -moz-animation: loadingSpinner 0.7s infinite linear;
    -o-animation: loadingSpinner 0.7s infinite linear;
    -webkit-animation: loadingSpinner 0.7s infinite linear;
    animation: loadingSpinner 0.7s infinite linear;
}

@-moz-keyframes loadingSpinner {
  0%   {
      -moz-transform: rotate(0deg);

  }
  100% {
      -moz-transform: rotate(360deg);
  }
}

@-o-keyframes loadingSpinner {
  0%   {
      -o-transform: rotate(0deg);

  }
  100% {
      -o-transform: rotate(360deg);
  }
}

@-webkit-keyframes loadingSpinner {
  0%   {
      -webkit-transform: rotate(0deg);

  }
  100% {
      -webkit-transform: rotate(360deg);
  }
}

@keyframes loadingSpinner {
  0%   {
      transform: rotate(0deg);

  }
  100% {
      transform: rotate(360deg);
  }
}

<div class="loadingSpinner"></div>

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Answer 1

js. , .start, 60 , (, 36000deg).

.loadingSpinner {
    width: 50px;
    height: 50px;
    border: 5px solid #3498db;
    border-top-color: rgba(0, 0, 0, 0);
    border-left-color: rgba(0, 0, 0, 0);
    border-radius: 50%;
    transform: rotate(0deg);
    transition: transform 60s;
}

.loadingSpinner.start {
    transform: rotate(36000deg);
}

: https://jsfiddle.net/6tkf1f95/1/

Answer 2

css?

@keyframes spinner {
    to {transform: rotate(360deg);}
}
 
@-webkit-keyframes spinner {
    to {-webkit-transform: rotate(360deg);}
}
 
.spinner {
    min-width: 30px;
    min-height: 30px;
}
 
.spinner:before {
    content: 'Loading…';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 50px;
    height: 50px;
    margin-top: -13px;
    margin-left: -13px;
}
 
.spinner:not(:required):before {
    content: '';
    border-radius: 50%;
    border: 5px solid #ccc;
    border-top-color: #03ade0;
    animation: spinner .7s linear infinite;
    -webkit-animation: spinner .7s linear infinite;
}

<div class="spinner"></div>

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