/* width & height includes padding + border */
* {
  box-sizing: border-box;
}

body {
  background-color: rgb(16, 16, 16);
  color: white;
}

header {
  text-align: center;
  margin-bottom: 1em;
}

h1,
h2 {
  display: inline;
  font-weight: 100;
  font-family: Arial, Helvetica, sans-serif;
}
h1 {
  font-size: 120%;
}
h2 {
  font-size: 100%;
}

h1 a {
  color: hsl(50, 100%, 50%);
}

button {
  cursor: pointer;
}

.d100checkbox {
  float: left;
}

.resetButtonContainer {
  float: right;
}

/* Green */
.playerNbrsFieldset {
  clear: both;
  border: none;
  text-align: center;
}
.flexboxWrapper {
  display: flex;
  justify-content: center;
  flex-wrap: wrap-reverse;
}
.playerNbrsFieldset label {
  background-color: hsl(124, 40%, 40%);
  font-size: 120%;
  cursor: pointer;
  margin: 0.2em 0.2em;
  padding: 0.6em 1em;
  border: solid;
  border-color: rgba(0, 0, 0, 0.4);
  border-radius: 0.4em;
}
.playerNbrsFieldset input[type="radio"] {
  opacity: 0;
  position: fixed;
  width: 0;
}
input[type="radio"]:checked + label {
  color: black;
  background-color: white;
}

/* Both blue and red */
.bothUsAndThemForm {
  margin: auto;
  text-align: center;
}
.bothUsAndThemForm fieldset {
  display: inline-block;
  padding: 0.5em;
  margin: auto;
  border-color: rgb(64, 64, 64);
  max-width: 18em;
}
.bothUsAndThemForm button {
  margin: 0.2em 0.2em;
  padding: 0.6em 1em;
  border: solid;
  border-color: rgba(0, 0, 0, 0.4);
  border-radius: 0.4em;
}
.bothUsAndThemForm h3,
.bothUsAndThemForm h4 {
  font-weight: 100;
  font-family: Arial, Helvetica, sans-serif;
  margin-top: 0em;
  margin-bottom: 0.2em;
}
.usOrThemInputs h3 {
  text-align: left;
}
.usOrThemInputs input {
  font-size: 150%;
  width: 100%;
  padding: 0.2em;
}
.usOrThemInputs button {
  font-size: 100%;
  background-color: white;
}
#minus1Us,
#minus1Them {
  float: left;
  margin-left: 0em;
}
#plus1Us,
#plus1Them {
  float: right;
  margin-right: 0em;
}
.bothAdvantageInputSections {
  clear: both;
  padding-bottom: 0.1em;
}
.bothAdvantageInputSections h4 {
  font-size: 90%;
}
.bothAdvantageInputSections input {
  font-size: 100%;
  max-width: 4em;
}
.usFieldset {
  background-color: hsl(240, 100%, 20%);
}
.themFieldset {
  background-color: hsl(340, 100%, 15%);
}
.advantageUsSection h4 {
  color: hsl(190, 100%, 70%);
}
.advantageUsSection button,
.advantageUsSection input {
  background-color: hsl(190, 100%, 70%);
}
.advantageThemSection h4 {
  color: hsl(0, 80%, 70%);
}
.advantageThemSection button,
.advantageThemSection input {
  background-color: hsl(0, 80%, 70%);
}

output > div {
  text-align: center;
  font-size: 200%;
  margin-top: 0.2rem;
}

footer {
  text-align: center;
  font-size: small;
}
#precisUs {
  color: hsl(190, 100%, 70%);
}
#precisThem {
  color: hsl(0, 80%, 70%);
}

@media only screen and (min-width: 24em) {
  body {
    margin: 1em;
  }
}
@media only screen and (min-width: 52em) {
  body {
    max-width: 50em;
    margin-left: auto;
    margin-right: auto;
  }
}