.header {
  width: 100%;
  height: 5.75rem;
  background-color: #ffffff;
}

.content {
  width: 1000px;
  height: 100%;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.left {
  display: flex;
  flex: 6;
  align-items: center;
}

.logo {
  height: 100%;
  width: 12rem;
}

.logo img {
  width: 12rem;
  height: 100%;
}

.theme {
  font-size: 30px;
  font-weight: 700;
  color: #0e58c8;
  font-family: Arial, Helvetica, sans-serif;
  margin-left: 40px;
}

.menu {
  flex: 4;
  font-size: 15px;
  color: gray;
  display: grid;
  grid-template-columns: 23% 23% 23% 23%;
  grid-row-gap: 10px;
  grid-column-gap: 2%;
}