php-xmpp-invitation/stylesheets/styles.css

/* Mostly cherrypicked from bootstrap https://getbootstrap.com/css/ */
.btn {
	display: inline-block;
	margin-bottom: 0;
	font-weight: normal;
	text-align: center;
	vertical-align: middle;
	border-right: none;
	border-bottom: none;
	color: #666;
	text-decoration: none;
	transition: all .2s;
	touch-action: manipulation;
	cursor: pointer;
	border: 1px solid transparent;
	white-space: nowrap;
	padding: 6px 16px;
	font-size: 13px;
	line-height: 1.846;
	border-radius: 3px;
	-webkit-user-select: none;
	-moz-user-select: none;
}

.btn:hover, .btn:focus, .btn.focus {
	color: #666;
	text-decoration: none;
}

textarea, textarea.form-control, input.form-control, input[type="text"], input[type="password"], input[type="email"], input[type="number"], .form-control[type="text"], .form-control[type="password"], .form-control[type="email"], .form-control[type="tel"] {
	padding: 0;
	border: none;
	border-radius: 0;
	-webkit-box-shadow: inset 0 -1px 0 #ddd;
	box-shadow: inset 0 -1px 0 #ddd;
	font-size: 1.1em;
}

.form-control {
	display: block;
	width: 100%;
	height: 37px;
	line-height: 1.846;
	color: #666;
	background-color: transparent;
	background-image: none;
	-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,0.075);
	box-shadow: inset 0 1px 1px rgba(0,0,0,0.075);
	-webkit-transition: border-color ease-in-out .15s,-webkit-box-shadow ease-in-out .15s;
	transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
}

input, button {
	-webkit-font-smoothing: antialiased;
	letter-spacing: .1px;
	text-rendering: optimizeLegibility;
}

a {
	text-decoration: none;
}

a:hover, a:focus {
	color: #165d16;
	text-decoration: underline;
}