style.css

@import url("https://fonts.googleapis.com/css2?family=Poppins&display=swap");

* {
	box-sizing: border-box;
}

body {
	font-family: "Poppins", sans-serif;
	margin: 0;
	width: 100vw;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.band3.hidden,
.hidden {
	display: none;
}

.instructions-diagram {
	position: fixed;
	top: 20px;
	right: 20px;
	display: flex;
	justify-content: flex-end;
	margin: 0;
}

.btn {
	border: none;
	border-radius: 5px;
	padding: 5px;
	font-size: 14px;
}

.btn:focus {
	outline: none;
}

.container {
	display: flex;
	flex-direction: column;
	justify-content: center;
	align-items: center;
}

.container h1 {
	margin: 10px 0;
}

.band-selector {
	border-bottom: 2px solid gray;
	width: 60vw;
}

.input-output-display {
	width: 60vw;
	padding: 10px;
	display: flex;
}

.input {
	width: 50%;
	margin-right: 20px;
}
.input h4 {
	margin-bottom: 0;
}
.input form div {
	display: flex;
	flex-direction: column;
	justify-content: flex-start;
	padding: 10px 0;
}

.input form div label {
	font-weight: bold;
	font-size: 0.6rem;
	letter-spacing: 0.5px;
	padding-bottom: 2px;
}

.input form div select {
	font-size: 0.8rem;
	padding: 5px 3px;
}

.output {
	display: flex;
	flex-direction: column;
	align-items: center;
}

.output h4 {
	width: 100%;
}

#resistor-diagram {
	position: relative;
}

#resistor-diagram img {
	width: 100%;
}

.bands {
	position: relative;
}

.band-top {
	position: absolute;
	background-color: rgba(228, 216, 202, 0.746);
	border: 1px solid rgba(0, 0, 0, 0.267);
	width: 15px;
	height: 55px;
}

.band {
	line-height: 100%;
	text-align: center;
	position: relative;
	padding: 1px;
	width: 65px;
	font-size: 10px;
	background-color: rgba(228, 216, 202, 0.746);
	border: 1px solid rgba(0, 0, 0, 0.267);
	border-radius: 2px;
}

#first-band-top {
	position: absolute;
	height: 75px;
	top: -81px;
	left: 30px;
}

#first-band-top::after {
	content: "";
	position: absolute;
	width: 13px;
	height: 26px;
	top: 100%;
	left: -1px;
	background-color: inherit;
	border: 1px solid rgba(0, 0, 0, 0.267);
	opacity: 0.5;
}

#first {
	width: 20px;
	position: absolute;
	top: 100px;
	left: -3.5px;
}

#second-band-top {
	position: absolute;
	top: -71px;
	left: 80px;
}

#second-band-top::after {
	content: "";
	position: absolute;
	width: 13px;
	height: 36px;
	top: 100%;
	left: -1px;
	background-color: inherit;
	border: 1px solid rgba(0, 0, 0, 0.267);
	opacity: 0.5;
}

#second {
	position: absolute;
	width: 20px;
	top: 90px;
	left: -3.5px;
}

#third-band-top {
	position: absolute;
	top: -71px;
	left: 110px;
}

#third-band-top::after {
	content: "";
	position: absolute;
	width: 13px;
	height: 36px;
	top: 100%;
	left: -1px;
	background-color: inherit;
	border: 1px solid rgba(0, 0, 0, 0.267);
	opacity: 0.5;
}

#third {
	position: absolute;
	width: 20px;
	top: 90px;
	left: -3.5px;
}

#multiplier-top {
	position: absolute;
	top: -71px;
	right: 100px;
}

#multiplier-top::after {
	content: "";
	position: absolute;
	width: 13px;
	height: 36px;
	top: 100%;
	left: -1px;
	background-color: inherit;
	border: 1px solid rgba(0, 0, 0, 0.267);
	opacity: 0.5;
}

#multiplier {
	position: absolute;
	width: 60px;
	top: 90px;
	right: -24px;
}

#tolerance-top {
	position: absolute;
	height: 75px;
	top: -81px;
	right: 27.5px;
}

#tolerance-top::after {
	content: "";
	position: absolute;
	width: 13px;
	height: 26px;
	top: 100%;
	left: -1px;
	background-color: inherit;
	border: 1px solid rgba(0, 0, 0, 0.267);
	opacity: 0.5;
}

#tolerance {
	position: absolute;
	width: 60px;
	top: 100px;
	left: -23.5px;
}

.result-display {
	margin-top: 50px;
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

#find-value {
	background-color: rgba(200, 70, 70, 0.87);
	color: #fff;
}

.result {
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
}

.info-popup {
	display: none;
	position: fixed;
	top: 2vh;
	align-items: center;
	justify-content: center;
	flex-direction: column;
	width: 80vw;
	border: 1px solid black;
	border-radius: 5px;
	position: relative;
	padding: 10px;
	text-align: center;
	background-color: #fff;
	z-index: 100;
}

.info-popup p {
	line-height: 100%;
	letter-spacing: 0.4px;
}

.info-popup h2 {
	margin-bottom: 10px;
	border-bottom: 2px solid black;
	width: 40vw;
}

.cross {
	position: absolute;
	top: 15px;
	right: 15px;
	border-radius: 50%;
	color: #fff;
	height: 35px;
	width: 35px;
	background-color: rgb(177, 36, 36);
}

.info-popup img {
	width: 50%;
}