.app {
  max-width:1540px;
  margin: 0 auto;
  background: #dedede;
  width: 100%;
  height: 100%;
}

.header-inner {
  display: flex;
  justify-content: flex-start;
  align-items: center;
  margin-left: 100px;
  padding-top: 40px;
}

.menu-icon {
  width: 30px;
  height: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  cursor: pointer;
  background: blue;
  padding: 8px;
  border-radius: 3px;
  box-shadow: 4px 4px 2px #ABADB4;
}

.menu-icon span {
  display: block;
  width: 100%;
  height: 1px;
  background: #fff;
  border-radius: 2px;
  transition: all 0.3s;
}

.menu-icon .line1 {
  width: 50%;
}

.menu-icon .line3 {
  width: 30%;
  margin-right: auto;
}

a {
  text-decoration: none;
  color: blue;
}

.menu-link {
  display: flex;
  align-items: center;
  gap: 15px;
}

@media(max-width:768px) {
  .header-inner {
    margin-left: 50px;
  }
}