overleaf/services/web/public/stylesheets/app/login-register.less

@brand-ieee-color       : #00629B;
@brand-google-color     : #4885ED;
@brand-twitter-color    : #1DA1F2;
@brand-orcid-color      : #A6CE39;
@brand-sharelatex-color : #A93529;

.make-login-register-brand-btn(@color) {
	background-color: @color;
	text-indent: -10px;
	&:focus,
	&:hover {
		background-color: darken(@color, 8%);
	}
	&:active {
		background-color: darken(@color, 16%);
	} 
}

.login-register-container {
	max-width: 400px;
	margin: 0 auto;
}
	.login-register-header {
		padding-top: @line-height-computed;
		padding-bottom: @line-height-computed - 5;
		border-bottom: solid 1px @hr-border;
	}
		.login-register-header-heading {
			margin: 0;
			color: @text-color;
		}

	.login-register-card {
		padding-top: 0;
		padding-bottom: 0;
		text-align: center;
	}

		.login-register-form,
		.login-register-sharelatex {
			padding: @line-height-computed (@line-height-computed * 2);
			border-bottom: solid 1px @hr-border;
			&:last-child {
				border-bottom-width: 0;
			}
		}
		.login-register-other-links {
			padding: @line-height-computed (@line-height-computed * 2);
		}

		.login-register-text,
		.login-register-hr-text-container {
			margin: 0;
			line-height: 1;
			font-size: 90%;
		}

		.login-register-text {
			padding-bottom: 25px;
			&:last-child {
				padding-bottom: 0;
			}
		}

		.login-register-hr-text-container {
			position: relative;
			padding: @line-height-computed 0;

			&::before {
				content: '';
				position: absolute;
				height: 1px;
				background-color: @hr-border;
				top: 50%;
				left: 0;
				right: 0;
			}
		}
			.login-register-hr-text {
				position: relative;
				background-color: #FFF;
				padding: 0 (@line-height-computed / 2);
			}
		.login-register-sharelatex-tooltip {
			display: inline-block;
			font-size: 135%;
			position: relative;
			top: 2px;
			margin-left: 3px;
			color: @link-color;
			cursor: pointer;
		}

		.login-btn-ieee {
			.make-login-register-brand-btn(@brand-ieee-color);
		}

		.login-btn-google {
			.make-login-register-brand-btn(@brand-google-color);
		} 

		.login-btn-twitter {
			.make-login-register-brand-btn(@brand-twitter-color);
		} 

		.login-btn-orcid {
			.make-login-register-brand-btn(@brand-orcid-color);
		} 

		.login-btn-sharelatex {
			.make-login-register-brand-btn(@brand-sharelatex-color);
		} 
			.login-btn-icon {
				display: inline-block;
				float: left;
				margin-left: 5px;
				background: url(/img/brand/lion.svg) center/contain no-repeat;
				width: 24px;

				&::before {
					content: '\00a0'; // Non-breakable space. A non-breakable character here makes this icon work like font-awesome.
				}
			}
			.login-btn-icon-ieee {
				background-image: url(/img/other-brands/logo_ieee.svg);
			}
			.login-btn-icon-google {
				background-image: url(/img/other-brands/logo_google.svg);
			}
			.login-btn-icon-twitter {
				background-image: url(/img/other-brands/logo_twitter.svg);
			}
			.login-btn-icon-orcid {
				background-image: url(/img/other-brands/logo_orcid.svg);
			}
			.login-btn-icon-sharelatex {
				background-image: url(/img/other-brands/logo_sharelatex.svg);
			}

		.login-register-header-heading {
			margin: 0;
			color: @text-color;
		}

.registration-message-heading {
	color: @text-color;	
}

.registration-message-details {
	font-size: 90%;
}