* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
  color: #17212b;
  background: #f5f7fb;
  font:
    16px/1.6 Arial,
    sans-serif;
}
header,
section,
footer {
  margin-bottom: 24px;
  padding: 24px;
  border: 1px solid #d5dee8;
  border-radius: 10px;
  background: #fff;
}
h1,
h2,
h3 {
  line-height: 1.2;
}
a {
  color: #0645ad;
  font-weight: bold;
}
.long-text {
  max-width: 700px;
}
blockquote {
  border-left: 4px solid #7655d6;
  margin: 24px 0;
  padding-left: 16px;
}
.animated {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 16px 0;
  padding: 28px;
  color: #fff;
  background: #345;
  animation: move 3s ease-in-out infinite alternate;
}
.carousel {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin: 16px 0;
  padding: 18px;
  background: #e8edff;
}
.notice {
  margin-top: 16px;
  padding: 16px;
  background: #fff4d6;
}
button,
input,
textarea {
  padding: 9px;
  font: inherit;
}
button {
  cursor: pointer;
}
form {
  display: grid;
  gap: 8px;
  max-width: 500px;
}
input,
textarea {
  width: 100%;
  border: 1px solid #9aaabd;
  border-radius: 4px;
}
#form-status {
  min-height: 1.6em;
  color: #176b3a;
}
table {
  width: 100%;
  margin-top: 24px;
  border-collapse: collapse;
}
th,
td {
  padding: 8px;
  border: 1px solid #b9c5d1;
  text-align: left;
}
@keyframes move {
  to {
    transform: translateX(12px);
  }
}
@media (max-width: 600px) {
  body {
    padding: 12px;
  }
  .animated,
  .carousel {
    display: block;
  }
  .animated span {
    display: block;
    margin-top: 8px;
  }
}