easier control within type scales as it avoids margin collapsing.\n\n%heading {\n  margin-top: 0; // 1\n  margin-bottom: $headings-margin-bottom;\n  font-family: $headings-font-family;\n  font-style: $headings-font-style;\n  font-weight: $headings-font-weight;\n  line-height: $headings-line-height;\n  color: var(--#{$prefix}heading-color);\n}\n\nh1 {\n  @extend %heading;\n  @include font-size($h1-font-size);\n}\n\nh2 {\n  @extend %heading;\n  @include font-size($h2-font-size);\n}\n\nh3 {\n  @extend %heading;\n...

append elements allow us to 1) be less clever, 2) simplify our selectors, and\n// 3) support HTML5 form validation.\n\n.input-group-prepend,\n.input-group-append {\n  display: flex;\n\n  // Ensure buttons are always above inputs for more visually pleasing borders.\n  // This isn't needed for `.input-group-text` since it shares the same border-color\n  // as our inputs.\n  .btn {\n    position: relative;\n    z-index: 2;\n\n    &:focus {\n      z-index: 3;\n    }\n  }\n\n  .btn + .btn,\n  .btn + .input-group-text,\n...

     * comment: Timeout for loading index backup logs.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getIndexBackupLogLoadTimeout();

    /**
     * Get the value for the key 'index.backup.log.load.timeout' as {@link Integer}. <br>
     * The value is, e.g. 60000 <br>
     * comment: Timeout for loading index backup logs.