body {
  background: #f0f0f0;
  padding: 0;
  margin: 0;
}

.navbar-collapse {
  display: flex;
  align-items: center;
  margin-top: 21px;
  margin-left: 17vw;
}

.app {
  width: 7.76vw;
  height: 3.07vw;
  margin-right: 0.89vw;
  cursor: pointer;
}

.company {
  width: 8.85vw;
  height: 3.07vw;
  cursor: pointer;
}

.app-content {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.left {
  margin-bottom: 2vw;
}

.left-top {
  position: relative;
  margin-bottom: 31px;
  display: flex;
  flex-direction: column;
}

.left-top-1 {
  width: 18.38vw;
  height: auto;
  margin-bottom: 1.85vh;
}

.left-top-2 {
  width: 40.42vw;
  height: auto;
  margin-bottom: 10vh;
}

.left-bottom {
  display: flex;
  /*align-items: center;*/
}

.left-bottom-1 {
  width: 11.56vw;
  height: 3.13vw;
  margin-right: 0.99vw;
  cursor: pointer;
}

.left-bottom-2 {
  width: 11.56vw;
  height: 3.13vw;
  cursor: pointer;
  /*border: 1px solid #000000;*/
  border-radius: 0.73vw;
  box-sizing: border-box;
}

.left-bottom-2-img{
  width: 100%;
  height: 100%;
}

.right-img {
  width: 40.39vw;
  height: auto;
}

.company-content {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  overflow: hidden;
}

.bg-img {
  position: absolute;
  top: 4.32vw;
  left: 0;
  width: 100vw;
  height: 39.11vw;
}

.introduce {
  position: relative;
  width: 33.39vw;
  height: auto;
  margin-left: 10vw;
  z-index: 2;
}

.phone {
  position: relative;
  width: 37.98vw;
  height: auto;
  z-index: 2;
}