@import url("https://cdn.jsdelivr.net/npm/bootstrap-icons@1.3.0/font/bootstrap-icons.css");
.loader {
  border: 3px solid #f3f3f3;
  border-radius: 50%;
  border-top: 3px solid #333;
  width: 20px;
  height: 20px;
  -webkit-animation: spin 2s linear infinite; /* Safari */
  animation: spin 2s linear infinite;
  display: inline-block;
  margin-left: 5px;
}

/* Safari */
@-webkit-keyframes spin {
  0% { -webkit-transform: rotate(0deg); }
  100% { -webkit-transform: rotate(360deg); }
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.jumbotron{
  padding: 20px;
  border: solid 1px #ddd;
  width: 50%;
  margin: 10px;
  background: #fff;
}


.btn-primary{
  background: #007cba;
    border-color: #007cba;
    color: #fff;
    text-decoration: none;
    text-shadow: none;
}

.btn{
      display: inline-block;
    text-decoration: none;
    font-size: 13px;
    line-height: 2.15384615;
    min-height: 30px;
    margin: 0;
    padding: 0 10px;
    cursor: pointer;
    border-width: 1px;
    border-style: solid;
    -webkit-appearance: none;
    border-radius: 3px;
    white-space: nowrap;
    box-sizing: border-box;
}