#app{
    position: relative;
}
.bktj {
    padding: 65px;
    background: #F7F0F0;
}

.bktj img:nth-child(1) {
    width: 676px;
    margin: auto;
}

.bktj img:nth-child(2) {
    width: 1200px;
    margin: auto;
    margin-top: 50px;
}

.ks_info {
    padding: 65px;
}

.ks_info img:nth-child(1) {
    width: 676px;
    margin: auto;
}

.ks_info img:nth-child(2) {
    width: 1200px;
    margin: auto;
    margin-top: 50px;
}

.bkxz {
    padding: 65px;
    background: #F7F0F0;
}

.bkxz>img:nth-child(1) {
    width: 676px;
    margin: auto;
}

.bk_box {
    width: 1200px;
    margin: auto;
    margin-top: 50px;
    padding: 28px;
    background-color: #ffffff;
    border-radius: 20px;
    position: relative;
}

.bk_box img:nth-child(2) {
    width: 636px;
    margin: 20px 0;
}
.click {
    width: 50px;
    height: 50px;
    position: absolute;
    right: 380px;
    top:29px;
    animation: click .6s linear infinite;
}
@keyframes click {
    0% {
        transform: translateX(-50%);
    }
    50% {
        transform: translateX(50%);
    }
    100% {
        transform: translateX(-100%);
    }
}

.course {
    padding: 65px;
    margin: auto;
}

.course img:nth-child(1) {
    width: 676px;
    margin: auto;
}

.course img:nth-child(2) {
    width: 1200px;
    margin: auto;
    margin-top: 50px;
}

.btn {
    width: 300px;
    margin: auto;
    margin-top: 50px;
}
.course_btn {
    display: inline-block;
    width: 300px;
    height: 80px;
    margin: auto !important;
    border-radius: 10px;
    border: 1px solid #03045e;
    position: relative;
    overflow: hidden;
    transition: all 0.5s ease-in;
    z-index: 1;
    border-radius: 50px;
    background: #FF471A;
    cursor: pointer;
}

.course_btn::before,
.course_btn::after {
    content: '';
    position: absolute;
    top: 0;
    width: 0;
    height: 100%;
    transform: skew(15deg);
    transition: all 0.5s;
    overflow: hidden;
    z-index: -1;
}

.course_btn::before {
    left: -10px;
    background: #240046;
}

.course_btn::after {
    right: -10px;
    background: #5a189a;
}

.course_btn:hover::before,
.course_btn:hover::after {
    width: 58%;
}

.course_btn:hover span {
    color: #e0aaff;
    transition: 0.3s;
}

.course_btn span {
    color: #ffffff;
    font-size: 25px;
    transition: all 0.3s ease-in;
}
.ks_content {
    padding: 65px;
    background: #F7F0F0;
}
.ks_content {
    padding: 65px;
    
}
.ks_content>img:nth-child(1){
    width: 676px;
    margin: auto;
}

.content_box {
    width: 1200px;
    margin: auto;
    margin-top: 50px;
    background-color: #ffffff;
    padding: 50px ;
}
.content_box img {
    width: 673px;
}
.zs {
    padding: 65px;
}
.zs img:nth-child(1){
    width: 676px;
    margin: auto;
}
.zs img:nth-child(2){
    width: 1200px;
    margin: auto;
    margin-top: 50px;
}
.contact {
    padding: 65px;
    background: #F7F0F0;
}
.contact img {
    width: 676px;
    margin: auto;
}
.form_item {
    padding: 12px 42px;
    background-color: #ffffff;
    width: 623px;
    /* height: 50px; */
    border-radius: 100px;
    margin: auto;
    margin-top: 50px;
    font-size: 20px;
  }
  .form_item input {
    font-size: 25px;
  }
  .icon {
    position: fixed;
    right: 0;
    top: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    font-size: 20px;
    cursor: pointer;
  }
  .icon img {
    width: 100px;
    height: 100px;
    animation: roundRule 1s linear infinite;
  }
  @-webkit-keyframes roundRule{
    0%, 100%{
      -webkit-transform: rotate(-15deg);
    }
    50%{
      -webkit-transform: rotate(15deg);
    }
  }
.dom {
    animation: dom .5s linear;
}
@keyframes dom {
    0% {
        transform: translateY(100%);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}