#app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body,
button {
  font-family: 'Noto Sans JP';
}

a {
  text-decoration: none;
  color: #333;
}

p {
  margin: 0;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
  border-radius: 15px;
}

::-webkit-scrollbar-thumb {
  background-color: #ccc;
  border-radius: 15px;
}

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

.mt-025 {
  margin-top: 0.25rem;
}

.mt-05 {
  margin-top: 0.5rem;
}

.mt-1 {
  margin-top: 1rem;
}

.mt-2 {
  margin-top: 2rem;
}

.ml-025 {
  margin-left: 0.25rem;
}

.ml-05 {
  margin-left: 0.5rem;
}

.ml-1 {
  margin-left: 1rem;
}

.ml-2 {
  margin-left: 2rem;
}

.mr-1 {
  margin-right: 1rem;
}

.mr-2 {
  margin-right: 2rem;
}

.mr-025 {
  margin-right: 0.25rem;
}

.mr-05 {
  margin-right: 0.5rem;
}

.mb-025 {
  margin-bottom: 0.25rem;
}

.mb-05 {
  margin-bottom: 0.5rem;
}

.mb-1 {
  margin-bottom: 1rem;
}

.mb-2 {
  margin-bottom: 2rem;
}

section {
  padding-left: 10px;
  padding-right: 10px;
}

.background {
  background-color: #d0d4f5;
}

.background-gray {
  background-color: #ebebeb;
}

.background-blue {
  background-color: #c8eff1;
}

@media (min-width: 960px) {
  section {
    padding-left: calc((100vw - 800px) / 2);
    padding-right: calc((100vw - 800px) / 2);
  }
}