* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  font-family: sans-serif;
  background-color: #f0f0f0;
  height: 100%;
  width: 100%;
}

/* ХЕДЕР */
.header {
  background-color: #ddd;
  height: 11vh;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  justify-content: start;
  align-items: center;
  gap: 0.5vw;
  width: 100%;
  margin: 0 0;
  padding: 1vh 30vw;
}

.icon {
  width: 6vw;
  height: 7vh;
  background-color: white;
  cursor: pointer;
  margin: 0.2vw auto;
}

/* MAIN-SECTION */
.main-section {
  width: 100%;
  background-color: #888;
  margin: 0 auto;
  padding: 6vh 0;
}

.banner {
  width: 77vw;
  height: 67vh;
  background-color: #333;
  margin: 0 auto;
}

/* НАВИГАЦИЯ */
.nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  width: 100%;
  margin: 0 auto;
  padding: 0 2vw;
  gap: 1vw;
  background-color: #999;
}

.card {
  height: 57vh;
  background-color: #888;
  margin: 5.2vh 0.5vw;
  min-width: 0;
}

/* КОНТЕНТНАЯ СЕКЦИЯ: большой и маленький блок */
.content-area {
  width: 100%;
  background-color: white;
  display: grid;
  padding: 5vh;
  margin: 0 auto;
  position: relative;
  gap: 1vw;
}

.left-big {
  height: 67vh;
  background-color: #aaa;
  position: relative;
  width: 100%;
  padding: 6vh;
}

.right-small {
  height: 55vh;
  background-color: #777;
  position: absolute;
  right: 4vw;
  width: 40vw;
}

/* ДВЕ КОЛОНКИ */
.two-columns {
  max-width: 100vw;
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin: 0;
  gap: 0;
}

.column {
  height: 67vh;
}

.column.left {
  background-color: #888;
}

.column.right {
  background-color: #444;
}

/* КОНТЕНТ-БЛОК */
.content-block {
  max-width: 100vw;
  background-color: #222;
  padding: 4vh;
  margin: 0 auto;
}

.inner-block {
  width: 100%;
  height: 60vh;
  background-color: #777;
}

/* ФУТЕР */
.footer {
  max-width: 100vw;
  height: 10vh;
  background-color: #333;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr 0fr;
  align-items: center;
  justify-content: space-between;
  padding: 0 2vw;
  position: relative;
}

.footer-center {
  width: 21vw;
  height: 6vh;
  background-color: white;
}

.footer-small {
  width: 3.5vw;
  height: 6vh;
  background-color: white;
}