body {
    min-width: 1920px !important;
    max-width: 2560px !important;
    margin: 0 auto;
}
.banner {
  position: relative;
}
.banner img:nth-child(2){
  position: absolute;
  top: 184px;
  right: 157px;
  width: 40px;
  height: 40px;
  transform: rotate(20deg);
  animation: aixin_1 1s infinite;
}
.banner img:nth-child(3){
  position: absolute;
  top: 125px;
  right: 139px;
  width: 33px;
  height: 35px;
  transform: rotate(20deg);
  animation: aixin_2 1s infinite;

}
@keyframes aixin_1 {
  0% {
    opacity: 0;
  }
  50% {
    opacity: 0.5;

  }
  100% {
   opacity: 1;
  }
}
@keyframes aixin_2 {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;

  }
  100% {
   opacity: 0;
  }
}

.sz {
    padding: 50px 0;
    background-image: url('../img/shizi_background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    position: relative;
}

.sz .sz_title {
    width: 100%;
    display: flex;
    justify-content: center;

}

.sz_title .sz_title_icon {
    width: 458px;
    height: 113px;

}

.sz_person {
    width: 100%;
    display: flex;
    justify-content: center;
}

.sz_person .person_item {
    position: relative;

}
.person_item:hover .picture {
  transform: rotateY(360deg) translateY(-30px) scale(1.2);
  /* transform: translateY(-30px); */
  transition: all 0.5s linear;
  
}

.picture {
    position: relative;
    top: 44px;
    left: 86px;
    width: 150px;
    height: 150px;
    transition: all 0.5s linear;
}

.introduce .name {
    padding-top: 30px;
    font-size: 28px;
    font-weight: bold;
    color: #FF5C2D;
    text-align: center;
}

.introduce {
    background-image: url('../img/wrap.png');
    background-size: cover;
    width: 325px;
    height: 380px;
}

.details {
    padding: 20px 25px 20px 25px;
    
    font-size: 18px;
    color: #000000;
    line-height: 30px;
}

.course {
    background-image: url('../img/course_bg.png');
    background-size: cover;
    /* height: 1348px; */
    padding: 50px 0;
}

.course_title {
    width: 100%;
    display: flex;
    justify-content: center;
}

.course_title img {
    width: 774px;
    height: 113px;
}
.course_tab {
    width: 100%;
    padding: 50px 0;
    position: relative;
}
.tab_btn {
    position: relative;
    padding: 12px 18px;
    transition: all 0.2s ease;
    border-radius: 100px;
    border: none;
    background: #a7a5a4;
    cursor: pointer;
    transition: all 0.5s linear;
    opacity: 0.3;
  }
  .active_tab_btn {
    background: #a7a5a4;
    opacity: 1;

  }
 .course_tab .tab_btn:nth-child(1){
    left: 50%;
    transform: translateX(-375px);
 }  
 .course_tab .tab_btn:nth-child(2){
    left: 50%;
    transform: translateX(-327px);
 }  
  
  .tab_btn:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    border-radius: 50px;
    background: #FF471A;
    width: 100px;
    height: 100%;
    transition: all 0.3s ease;
  }
  
  .tab_btn span {
    position: relative;
    font-family: "Ubuntu", sans-serif;
    font-size: 36px;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: #ffffff;
  }
  
  .tab_btn svg {
    position: relative;
    top: 0;
    margin-left: 10px;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke: #234567;
    stroke-width: 2;
    transform: translateX(-5px);
    transform: translateY(-5px);

    transition: all 0.3s ease;
  }
  
  .tab_btn:hover:before {
    width: 100%;
    background: #FF471A;
  }
  .tab_btn:hover svg {
    transform: translateX(0);
  }
  
  .tab_btn:active {
    transform: scale(0.95);
  }

  .course_pic1 {
    display: flex;
    width: 100%;
    justify-content: center;
  }
  .course_pic2 {
    display: flex;
    width: 100%;
    justify-content: center;
    
  }

  .active_course {
    animation: active_course 0.5s linear;
  }

  @keyframes active_course {
    0% {
      transform: translateX(-100%);
    }
    100% {
      transform: translateX(0);

    }

  }

  .item {
    margin-right: 50px;
  }
  .item img{
    width: 500px;
    /* padding-right: 50px; */
  }
  .submit_btn {
    position: relative;
  }
  .submit_btn button {
    margin-top: 50px;
    cursor: pointer;
    position: relative;
    padding: 10px 34px;
    font-size: 30px;
    color: #ffffff;
    border: 2px solid rgb(193, 163, 98);
    border-radius: 34px;
    background-color: #FF471A;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.23, 1, 0.320, 1);
    overflow: hidden;
    position: relative;
    left: 50%;
    transform: translateX(-50%);
  }
  
  .submit_btn button::before {
    content: '';
    position: absolute;
    inset: 0;
    margin: auto;
    width: 50px;
    height: 50px;
    border-radius: inherit;
    scale: 0;
    z-index: -1;
    background-color: rgb(193, 163, 98);
    transition: all 0.6s cubic-bezier(0.23, 1, 0.320, 1);
  }
  
  .submit_btn button:hover::before {
    scale:4;
  }
  
  .submit_btn button:hover {
    color: #212121;
    scale: 1.1;
    box-shadow: 0 0px 20px rgba(193, 163, 98,0.4);
  }
  
  .submit_btn button:active {
    scale: 1;
  }

  .contact_us {
    background: #FFE5DC;
    padding: 50px 0;
  }
  .contact_us_title img {
    width: 354px;
    height: 113px;
    margin: auto;
  }
  .contact_form_wrap {

  }
  .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;
  }

  .form_btn_wrap {
    display: flex;
    justify-content: center;
    margin-top: 50px;
  }

  /* 按钮 */
  .form_btn {
    position: relative;
    padding: 14px 78px;
    background: #FF5C2D;
    font-size: 30px;
    font-weight: 500;
    color:#ffffff;
    border: 3px solid #fec195;
    border-radius: 100px;
    box-shadow: 0 0 0 #fec1958c;
    transition: all 0.3s ease-in-out;
    cursor: pointer;
  }
  
  .star-1 {
    position: absolute;
    top: 20%;
    left: 20%;
    width: 25px;
    height: auto;
    filter: drop-shadow(0 0 0 #fffdef);
    z-index: -5;
    transition: all 1s cubic-bezier(0.05, 0.83, 0.43, 0.96);
  }
  
  .star-2 {
    position: absolute;
    top: 45%;
    left: 45%;
    width: 15px;
    height: auto;
    filter: drop-shadow(0 0 0 #fffdef);
    z-index: -5;
    transition: all 1s cubic-bezier(0, 0.4, 0, 1.01);
  }
  
  .star-3 {
    position: absolute;
    top: 40%;
    left: 40%;
    width: 5px;
    height: auto;
    filter: drop-shadow(0 0 0 #fffdef);
    z-index: -5;
    transition: all 1s cubic-bezier(0, 0.4, 0, 1.01);
  }
  
  .star-4 {
    position: absolute;
    top: 20%;
    left: 40%;
    width: 8px;
    height: auto;
    filter: drop-shadow(0 0 0 #fffdef);
    z-index: -5;
    transition: all 0.8s cubic-bezier(0, 0.4, 0, 1.01);
  }
  
  .star-5 {
    position: absolute;
    top: 25%;
    left: 45%;
    width: 15px;
    height: auto;
    filter: drop-shadow(0 0 0 #fffdef);
    z-index: -5;
    transition: all 0.6s cubic-bezier(0, 0.4, 0, 1.01);
  }
  
  .star-6 {
    position: absolute;
    top: 5%;
    left: 50%;
    width: 5px;
    height: auto;
    filter: drop-shadow(0 0 0 #fffdef);
    z-index: -5;
    transition: all 0.8s ease;
  }
  
  .form_btn:hover {
    background: transparent;
    color: #fec195;
    box-shadow: 0 0 25px #fec1958c;
  }
  
  .form_btn:hover .star-1 {
    position: absolute;
    top: -80%;
    left: -30%;
    width: 25px;
    height: auto;
    filter: drop-shadow(0 0 10px #fffdef);
    z-index: 2;
  }
  
  .form_btn:hover .star-2 {
    position: absolute;
    top: -25%;
    left: 10%;
    width: 15px;
    height: auto;
    filter: drop-shadow(0 0 10px #fffdef);
    z-index: 2;
  }
  
  .form_btn:hover .star-3 {
    position: absolute;
    top: 55%;
    left: 25%;
    width: 5px;
    height: auto;
    filter: drop-shadow(0 0 10px #fffdef);
    z-index: 2;
  }
  
  .form_btn:hover .star-4 {
    position: absolute;
    top: 30%;
    left: 80%;
    width: 8px;
    height: auto;
    filter: drop-shadow(0 0 10px #fffdef);
    z-index: 2;
  }
  
  .form_btn:hover .star-5 {
    position: absolute;
    top: 25%;
    left: 115%;
    width: 15px;
    height: auto;
    filter: drop-shadow(0 0 10px #fffdef);
    z-index: 2;
  }
  
  .form_btn:hover .star-6 {
    position: absolute;
    top: 5%;
    left: 60%;
    width: 5px;
    height: auto;
    filter: drop-shadow(0 0 10px #fffdef);
    z-index: 2;
  }
  
  .fil0 {
    fill: #fffdef;
  }