.flex {
  display: flex;
}
.flex.column {
  flex-direction: column;
}
.flex.row {
  flex-direction: row;
}
.grid {
  display: grid;
}
html {
  background-color: #87ceeb;
  width: 100%;
  height: 100%;
  font-size: 1rem;
  font-family: Helvetica, Arial, sans-serif;
}
body {
  color: #000;
  height: 100%;
  margin: 0 auto;
  padding: 0;
  max-width: 92rem;
}
header {
  max-height: 200px;
}
nav {
  background-color: #ffa500;
}
nav > ul {
  list-style-type: none;
  gap: 2rem;
  margin: 0;
}
nav > ul a {
  text-decoration: none;
  color: #000;
  font-size: 1.25rem;
  font-weight: bold;
}
nav > ul li {
  height: 2.5rem;
  line-height: 2.5rem;
  position: relative;
  margin: 0;
  padding: 0;
  z-index: 99;
}
nav > ul li a {
  padding: 0.5rem 1.5rem 0.5rem 1rem;
}
nav > ul li:has(>ul) {
  background-color: #ffa500;
}
nav > ul li:has(>ul)::before {
  content: '';
  width: 0;
  height: 0;
  border-right: 0.25rem solid transparent;
  border-left: 0.25rem solid transparent;
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
}
nav > ul li ul {
  visibility: hidden;
  opacity: 0;
  padding: 0;
  min-width: 10rem;
  background-color: #ffa500;
  position: absolute;
  top: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  transition: 200ms;
  transition-delay: 200ms;
}
nav > ul li ul li {
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 2rem;
  padding-right: 2.5rem;
}
nav > ul li ul li a {
  padding: 0.5rem 1rem;
}
nav > ul li ul li ul {
  top: -2%;
  left: 100%;
  transform: translate(0);
}
nav > ul li ul li:has(>ul) {
  background-color: #ffa500;
}
nav > ul li ul li:has(>ul)::before {
  content: '';
  width: 0;
  height: 0;
  border-top: 0.25rem solid transparent;
  border-bottom: 0.25rem solid transparent;
  position: absolute;
  right: 0.5rem;
  top: 50%;
  transform: translateY(-50%);
}
nav > ul li:hover {
  background-color: #ff8c00;
}
nav > ul li:hover > ul {
  opacity: 1;
  visibility: visible;
  transition-delay: 0ms;
}
main {
  overflow-y: auto;
  flex-grow: 2;
  padding-inline: 2.5rem;
}
#yearselector,
#yearselector button {
  font-size: 1.75rem;
  font-weight: bold;
}
#next {
  display: flex;
  gap: 2rem;
}
table#dienstentable th,
table#dienstentable td {
  padding: 0.5rem;
  text-align: left;
}
input[required] {
  border: 1px solid #b22222;
  border-shadow: 0 0 1px 1px #b22222;
}
footer {
  max-height: 10%;
  margin: auto 2rem 0;
}
.float-left {
  float: left;
  margin-right: 1rem;
}
.float-right {
  float: right;
  margin-left: 1rem;
}