weixin/pages/sign/sign.wxss

/* pages/sign/sign.wxss */
page{
  width: 100%;
  height: 100%;
}
.sign-view{
  width: 100%;
  height: 100%;
  position: relative;
}
.sign-view input{
  width: 42%;
  height: 5%;
  position: absolute;
  background-color: white;
  left: 30%;
  top:60%;
  font-size: calc(100vw * 10/375);
}

.sign-view button{
  position: absolute;
  top: 68%;
  left: 40%;
  width: 22%;
  height: 5%;
  font-size: calc(100vw * 10/375);
  display: flex;
  align-items:center;
  justify-content:center;
  background-color: cornflowerblue;
  border:solid white 1px; 
  color:white;
}

.sign-view button:active{
  box-shadow:cornflowerblue;
  transform: translateY(4px);
}