html, body {
  height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
  background-color: #232023;
  color: #fcfcfc;
}

a {
  color: #ea81e8;
}

header {
  display: flex;
  justify-content: space-between;
  background-color: #550f75;
  margin-bottom: 20px;
  position: sticky;
  top: 0;
}

.logo, nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.company-logo {
  height: 24px;
  transition: height 0.3s ease-in-out;
}

.company-logo:hover {
  height: 40px;
}

.menu-item {
  padding: 0 4px;
  transition: font-size 0.3s ease-in-out;
}

.menu-item:hover {
  font-size: 140%;
}

.nodeco {
  text-decoration: none;
}

.menu-item.active {
  border: 1px solid #20f398;
  border-radius: 10px;
  background-color: #10c074;
  color: #c016c6;
  transition: background-color 0.2s ease-in-out, font-size 0.3s ease-in-out;
}

.menu-item.active:hover {
  background-color: #88ecc1;
}

.container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1;
  width: 100%;
  max-width: 1280px;
  margin: auto;
}

h1.paragraph, p.paragraph, .before-submit {
  text-align: center;
}

footer {
  display: block;
  width: 100%;
  text-align: center;
  background-color: #ae6bdb;
  margin-top: 20px;
}

address {
  color: #232320;
}

address > a {
  color: #232320;
}

header, footer {
  padding: 10px 0;
}

.sns {
  padding: 8px;
  transition: background-color 0.3s ease-in-out;
}

.sns:hover {
  background-color: #fcfcfc;
}