.pull {
  background: url("../image/a4.jpg");
  background-size: cover;
  -webkit-background-size: cover;
  -o-background-size: cover;
  background-position: top center;
}
@media screen and (min-width: 1025px) {
  .container {
    width: 1400px;
    margin: 0 auto;
  }
  body {
    background-color: #F5F5F5;
  }
  .title {
    width: 100%;
    font-weight: 700;
    font-size: 30px;
    text-align: center;
    height: 40px;
    line-height: 40px;
  }
  .banner {
    position: relative;
    overflow: hidden;
    height: 490px;
    width: 100%;
    background: url("../image/a4.jpg");
    background-size: 100% 100%;
    background-size: cover;
    -webkit-background-size: cover;
    -o-background-size: cover;
    background-position: top center;
  }
  .banner .container {
    overflow: hidden;
    height: 490px;
  }
  .banner .contain {
    animation: scaleBig 1s linear 1;
    margin-top: 100px;
    margin-left: 20px;
    width: 650px;
    color: white;
  }
  .banner .contain > :nth-child(1) {
    font-size: 40px;
  }
  .banner .contain > :nth-child(2) {
    margin-top: 20px;
    font-size: 20px;
  }
  .banner .contain > :nth-child(3) {
    margin-top: 20px;
    font-size: 14px;
    line-height: 26px;
  }
  .try {
    margin-top: 80px;
    font-size: 22px;
  }
  .try .container {
    width: 1200px;
  }
  .try .ttitle {
    text-align: center;
    margin-top: 20px;
  }
  .try .explain {
    margin-top: 20px;
    float: left;
    width: 120px;
    font-size: 18px;
    text-align: right;
    height: 40px;
    line-height: 40px;
  }
  .try .ipt {
    margin-left: 30px;
    float: left;
    margin-top: 20px;
    height: 40px;
    width: 960px;
    outline: none;
    color: #666;
    text-indent: 1em;
    font-size: 14px;
    border: 1px solid #bab9b9;
    font-family: Arial;
  }
  .try .td {
    height: 160px;
    resize: none;
  }
  .try .submit {
    margin-left: 50%;
    transform: translateX(-50%);
    margin-top: 20px;
    width: 120px;
    height: 40px;
    background-color: #2595DE;
    color: white;
    text-align: center;
    line-height: 40px;
    cursor: pointer;
    float: left;
  }
  .relative {
    margin-top: 80px;
  }
  .relative #container {
    margin-top: 50px;
    height: 600px;
    width: 100%;
  }
  .footer {
    margin-top: 0;
  }
}
@media screen and (max-width: 1025px) {
  body {
    width: 10rem;
    overflow: hidden;
    background-color: #F5F5F5;
  }
  .container {
    width: 10rem;
  }
  .banner {
    height: 7.5135rem;
    width: 100%;
    overflow: hidden;
    background: url("../image/a4.jpg");
    background-size: 100% 100%;
    background-size: cover;
    -webkit-background-size: cover;
    -o-background-size: cover;
    background-position: center 0;
  }
  .banner .contain {
    animation: scaleBig 1s linear 1;
    color: white;
    margin-top: 1.3514rem;
    margin-left: 0.5405rem;
    width: 8.6486rem;
  }
  .banner .contain > :nth-child(1) {
    font-size: 0.5405rem;
  }
  .banner .contain > :nth-child(2) {
    margin-top: 0.2703rem;
    font-size: 0.3784rem;
  }
  .banner .contain > :nth-child(3) {
    margin-top: 0.2703rem;
    line-height: 0.6486rem;
    font-size: 0.3243rem;
  }
  .title {
    width: 100%;
    text-align: center;
    font-weight: 700;
    font-size: 0.4324rem;
    height: 0.5405rem;
    line-height: 0.5405rem;
  }
  .try {
    margin-top: 1.3514rem;
  }
  .try .ttitle {
    margin-top: 0.2703rem;
    text-align: center;
    font-size: 0.3784rem;
  }
  .try .container {
    width: 8.1081rem;
    margin: 0 auto;
  }
  .try .container .explain {
    margin-top: 0.2703rem;
    font-size: 0.3243rem;
  }
  .try .container .ipt {
    margin-top: 0.1622rem;
    width: 100%;
    height: 0.7027rem;
    text-indent: 1em;
    outline: none;
    font-size: 0.3243rem;
    font-family: Arial;
  }
  .try .container .td {
    height: 2.1622rem;
    resize: none;
  }
  .try .container .submit {
    width: 2.1622rem;
    height: 0.8108rem;
    line-height: 0.8108rem;
    background-color: #2595DE;
    text-align: center;
    color: white;
    margin: 0 auto;
    margin-top: 0.4324rem;
    font-size: 0.3243rem;
  }
  .relative {
    margin-top: 1.3514rem;
  }
  .relative #container {
    margin-top: 0.5405rem;
    width: 100%;
    height: 5.4054rem;
  }
  .footer {
    margin-top: 0;
  }
}