NodeBB/public/scss/install.scss

.hidden, .hide {
    display: none!important;
}

.working {
  width: 24px;
  height: 24px;

  position: relative;
	display: inline-block;
	vertical-align: bottom;

	&::before, &::after {
		content: ' ';

		width: 100%;
		height: 100%;
		border-radius: 50%;
		background-color: #fff;
		opacity: 0.6;
		position: absolute;
		top: 0;
		left: 0;

		-webkit-animation: sk-bounce 2.0s infinite ease-in-out;
		animation: sk-bounce 2.0s infinite ease-in-out;
	}

	&::after {
		-webkit-animation-delay: -1.0s;
		animation-delay: -1.0s;
	}
}

@-webkit-keyframes sk-bounce {
  0%, 100% { -webkit-transform: scale(0.0) }
  50% { -webkit-transform: scale(1.0) }
}

@keyframes sk-bounce {
  0%, 100% {
    transform: scale(0.0);
    -webkit-transform: scale(0.0);
  } 50% {
    transform: scale(1.0);
    -webkit-transform: scale(1.0);
  }
}

.container {
	font-size: 18px;
	margin-bottom: 100px;
}

.input-row {
	margin-bottom: 20px;

	.form-control {
		margin-bottom: 5px;
	}

	.input-field {
		border-right: 5px solid #FFF;
	}

	&.active {
		.input-field {
			border-right-color: #38B44A;
			padding-right: 20px;
		}

		.help-text {
			display: block;
		}
	}

	&.error {
		.input-field {
			border-right-color: #BF3E11;
			padding-right: 20px;
		}

		.help-text {
			display: block;
		}
	}
}