* {
  margin: 0;
  padding: 0;
}

html,body {
  height: 100%;
}

ul {
  list-style: none;
}

a {
  text-decoration: none;
}

.contrainer {
  height: 100%;
  display: flex;
  flex-direction: column;
  flex-wrap: wrap;
}

.header-contrainer {
  height: 120px;
  position: relative;
  overflow: hidden;
}

.header-random {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 150%;
  height: 300px;
  border-bottom-left-radius: 100%;
  border-bottom-right-radius: 100%;
  background: #5CACEE;
  text-align: center;
  line-height: 450px;
  font-size: 26px;
  font-weight: bold;
  color: white;
}

.mainer-contrainer {
  flex: 1;
  overflow: auto;
}
.mainer-contrainer::before {
  display: table;
}
.mainer {
  margin-top: 50px;
  font-size: 20px;
  font-family: "微软雅黑";
  box-sizing: border-box;
  padding: 0 15px;
  position: relative;
}

.bottom {
  height: 80px;
  background: #5CACEE;
}

.input-item {
  margin: 12px 0;
}

.input-item > span:nth-of-type(2) {
  font-weight: bold;
}

.image-contrainer {
  position: absolute;
  right: 40px;
  width: 120px;
  height: 120px;
  border-radius: 10px;
}

.image-contrainer > img {
  display: block;
  width: 100%;
  height: 100%;
}