.banner {
  max-height: 25rem;
  overflow: hidden;
  position: relative;
}
.banner > div {
  position: absolute;
  top: 24%;
  left: 50%;
  transform: translateX(-50%);
}
.banner > div .txt-box {
  position: relative;
}
.banner > div .txt-box::before,
.banner > div .txt-box::after {
  content: "";
  display: block;
  position: absolute;
  width: 0.65rem;
  height: 0.65rem;
  border: 0.15rem solid;
  transition: all 0.6s ease;
}
.banner > div .txt-box::before {
  top: 0;
  left: 0;
  border-bottom-color: transparent;
  border-right-color: transparent;
  border-top-color: #00edea;
  border-left-color: #00edea;
}
.banner > div .txt-box::after {
  bottom: 0;
  right: 0;
  border-top-color: transparent;
  border-left-color: transparent;
  border-bottom-color: #00edea;
  border-right-color: #00edea;
}
.banner > div .txt-box .txt {
  position: relative;
  padding: 1.2rem 1.8rem;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.banner > div .txt-box .txt::before,
.banner > div .txt-box .txt::after {
  content: "";
  display: block;
  position: absolute;
  width: 6.5rem;
  height: 2rem;
  border: 0.05rem solid;
  transition: all 0.6s ease;
  opacity: 0.5;
  animation: grow2 2s linear infinite;
}
.banner > div .txt-box .txt::before {
  top: 0;
  left: 0;
  border-bottom-color: transparent;
  border-right-color: transparent;
  border-top-color: #00edea;
  border-left-color: #00edea;
}
.banner > div .txt-box .txt::after {
  bottom: 0;
  right: 0;
  border-top-color: transparent;
  border-left-color: transparent;
  border-bottom-color: #00edea;
  border-right-color: #00edea;
}
.banner > div .txt-box .txt h2 {
  font-size: 2.2rem;
  font-weight: 600;
  color: #00edea;
}
.banner > div p {
  margin-top: 1.6rem;
  width: 30rem;
  font-size: 1.3rem;
  color: #fff;
  letter-spacing: 10px;
  line-height: 1.8rem;
  text-align: center;
}
#index {
  background: url(../images/indexbg.jpg) no-repeat center -25rem;
  background-size: cover;
}
#index .partners {
  padding-bottom: 2.5rem;
}
#index .partners .container {
  position: relative;
  margin-top: -8%;
  flex-wrap: wrap;
  z-index: 100;
}
#index .partners .container .par-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 1rem;
  width: 24%;
  margin-right: 1%;
}
#index .partners .container .par-item:nth-child(4n) {
  margin-right: 0;
}
#index .partners .container .par-item .par-pic {
  position: relative;
  padding: 0.5rem;
  background-color: #fff;
  min-height: 244px;
  box-shadow: 0rem 0.6rem 0.7rem rgba(0, 0, 0, 0.1);
  transition: 0.4s ease;
}
#index .partners .container .par-item .par-pic img {
  height: 100%;
}
#index .partners .container .par-item .par-pic .par-txt {
  padding: 2.5rem 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.6);
  border: 0.05rem solid #00edea;
  transition: 0.4s;
  opacity: 0;
}
#index .partners .container .par-item .par-pic .par-txt h4 {
  font-size: 1.2rem;
  color: #00edea;
  font-weight: 600;
  transition: 0.5s ease;
  transform: translateY(-1rem);
}
#index .partners .container .par-item .par-pic .par-txt p {
  margin-top: 0.5rem;
  font-size: 0.7rem;
  color: #fff;
  line-height: 1.5rem;
  text-align: center;
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: 0.6s ease;
  transform: translateY(1rem);
}
#index .partners .container .par-item .par-pic .par-txt .btn {
  margin-top: 1.25rem;
  transition: 0.7s ease;
  transform: translateY(1.5rem);
}
#index .partners .container .par-item > p {
  margin-top: 1rem;
  font-size: 1rem;
  color: #333;
  transition: 0.4s;
}
#index .partners .container .par-item:hover .par-pic {
  padding: 0;
}
#index .partners .container .par-item:hover .par-txt {
  opacity: 1;
}
#index .partners .container .par-item:hover .par-txt h4,
#index .partners .container .par-item:hover .par-txt p,
#index .partners .container .par-item:hover .par-txt .btn {
  transform: translateY(0);
}
#index .partners .container .par-item:hover > p {
  transform: translateY(-20px);
  opacity: 0;
}